阅读说明：本技术 一种双通道自复位阀及其工作方法 (Double-channel self-resetting valve and working method thereof ) 是由 林尚丰 何晓毅 刘佳 郑泽志 陈贵亮 邹龙 于 2019-12-11 设计创作，主要内容包括：本发明涉及一种双通道自复位阀及其工作方法,包括阀门本体,该阀门本体上延其周部开设有三个流体通道接口,且均于阀门本体内相通,流体通道接口上方阀门本体上套设并固定有扭簧限位装置,扭簧限位装置包括有圆筒状的扭簧安装座,扭簧安装座内同轴固设有圆筒状的限位筒,该限位筒外同轴套设有扭簧,扭簧安装座周侧开设有一弧形限位槽,扭簧尾端卡接在弧形限位槽一端,首端自弧形限位槽另一端朝外延伸,扭簧限位装置中心自上而下同轴插设有阀芯至阀门本体内,所述阀芯顶端经旋转把手控制转动,该旋转把手尾端下表面固连有一L型板,形成一U型槽,U型槽与扭簧同水平,该双通道自复位阀门结构合理,可实现阀门转换后的自复位,防止出现漏油现象。(The invention relates to a double-channel self-reset valve and a working method thereof, and the double-channel self-reset valve comprises a valve body, wherein three fluid channel interfaces are arranged on the valve body along the periphery of the valve body and are communicated with the valve body, a torsional spring limiting device is sleeved and fixed on the valve body above the fluid channel interfaces and comprises a cylindrical torsional spring mounting seat, a cylindrical limiting cylinder is coaxially and fixedly arranged in the torsional spring mounting seat, a torsional spring is coaxially sleeved outside the limiting cylinder, an arc-shaped limiting groove is arranged on the periphery of the torsional spring mounting seat, the tail end of the torsional spring is clamped at one end of the arc-shaped limiting groove, the head end of the torsional spring extends outwards from the other end of the arc-shaped limiting groove, a valve core is coaxially inserted in the center of the torsional spring limiting device from top to bottom into the valve body, the top end of the valve core is controlled to rotate by a rotating handle, an, the double-channel self-resetting valve is reasonable in structure, can realize self-resetting after the valve is switched, and prevents oil leakage.)

1. A double-channel self-resetting valve is characterized in that: including the valve body, extend its week portion on this valve body and seted up three fluid passage interface, and all communicate with each other in the valve body, the cover is established and is fixed with torsional spring stop device on the valve body of fluid passage interface top, torsional spring stop device is including cylindric torsional spring mount pad, and the coaxial cylindrical spacing section of thick bamboo that has set firmly in this torsional spring mount pad, and the coaxial cover is equipped with the torsional spring outside this spacing section of thick bamboo, an arc spacing groove has been seted up to torsional spring mount pad week side, and the joint of torsional spring tail end is in arc spacing groove one end, and the head end extends outwards from the arc spacing groove other end, it is internal that the coaxial plug-in of torsional spring stop device center top-down is equipped with case to the valve body, the case top is rotated through rotatory handle control, and this rotatory handle tail end lower surface has linked firmly an L template, forms.

2. The dual channel self-resetting valve of claim 1, wherein: the three fluid channel interfaces are respectively a fluid inlet, a fluid outlet and a fluid sampling port, and the caliber of the fluid inlet is larger than the calibers of the fluid outlet and the fluid sampling port.

3. The dual channel self-resetting valve of claim 1, wherein: the top cover of the torsion spring mounting seat is provided with an annular cover plate for preventing the torsion spring from being separated.

4. The dual channel self-resetting valve of claim 1, wherein: the valve body between the torsion spring limiting device and the three fluid channel interfaces is sleeved and fixed with a fixed rod mounting ring, and the outer side of the fixed rod mounting ring is horizontally screwed with a fixed rod.

5. The dual channel self-resetting valve of claim 1, wherein: the valve core comprises a core body with a tip end downwards in a conical shape, a screw rod is fixedly connected to the upper end of the core body, a through hole is horizontally formed in the middle of the core body in a penetrating mode, the vertical position of the core body is limited and sealed through a sealing ring and a valve core fastening piece, the valve core fastening piece is coaxially inserted on the valve core in a threaded mode, and the head end of the rotary handle is clamped at the upper end of the screw rod and fastened through a nut.

6. The dual channel self-resetting valve of claim 1, wherein: the opening direction of the U-shaped groove is consistent with the tail end rotating direction of the head end of the torsion spring, so that the torsion spring is driven to rotate, the torsion spring is driven to reset, the top of the torsion spring is connected with the bottom of the U-shaped groove, the rotating handle is driven to reset, and the tail end of the torsion spring is outwards bent and clamped on the outer wall of the torsion spring mounting seat after the arc-shaped limiting groove is formed.

7. The dual channel self-resetting valve of claim 3, wherein: the upper end of the limiting cylinder is higher than the torsion spring mounting seat, two limiting plates are arranged on the upper surface of the limiting cylinder along the circumference of the limiting cylinder, and the two limiting plates are higher than the plane of the cover plate; and a limiting block matched with the limiting plate is fixedly arranged beside the position, close to the head end, of the rotating handle.

8. A method of operating a dual channel self-resetting valve, comprising the steps of using any of the dual channel self-resetting valves of claims 1-7, and: firstly, when all parts are in a working state, the head end of the torsion spring is positioned in a U-shaped groove, a fluid inlet is communicated with a fluid outlet through a through hole of a core body, an oil path from the fluid inlet to the fluid outlet, when an oil sample needs to be extracted for real-time oil sample analysis, only a rotating handle needs to be rotated in a forward direction, the torsion spring is driven to rotate in the forward direction under the action of the U-shaped groove, the torsion spring rotates towards the tail end of the torsion spring in an arc-shaped limiting groove at the moment, torsion torque is generated by torsion, meanwhile, the rotating handle drives a valve core to rotate, sampling is carried out when the oil path is from the fluid inlet to a fluid sampling port, external force to the rotating handle is unloaded afterwards, the torsion spring rotates in a reverse direction under the action of the torsion torque, then the torsion spring is abutted to; when the valve needs to be closed, the rotating handle only needs to be rotated continuously in the reverse direction, the rotating handle is far away from the head end of the torsion spring and cannot rotate, but the valve core rotates to close the valve.

Technical Field

The invention relates to a double-channel self-resetting valve and a working method thereof.

Background

In the process of oil-way operation of the dissolved gas on-line monitoring device in most transformer oil, a valve needs to be installed for connecting the dissolved gas on-line monitoring device in the transformer oil and extracting an oil sample from a transformer body for real-time oil sample analysis, and meanwhile, the oil sample also needs to be directly obtained from the valve for off-line analysis. However, the following problems often occur in daily operations:

1. in the daily operation of the valve of the online monitoring device for the dissolved gas in the oil, operation errors exist at certain probability, and if the valve is switched in different states, the channel is forgotten to be switched back to the original state, so that the abnormal operation of the device is caused;

2. a sampling port of an oil valve of an online monitoring system for dissolved gas in oil is usually embedded in a needle valve mode, and the sampling port is opened and closed by adjusting the needle valve. After long-time operation, the tightness of the needle valve is reduced, and oil leakage is easy to occur;

3. in the process of operating the valve, if the channel is switched and the valve is closed, the whole valve is basically stressed, and when the external stress is uneven or is often influenced by external force, each interface of the valve is loosened or damaged at a certain probability in a long time, so that the oil leakage phenomenon is caused.

Disclosure of Invention

In view of the defects of the prior art, the invention aims to provide a double-channel self-resetting valve and a working method thereof, which can realize self-resetting after the valve is switched and prevent oil leakage.

In order to solve the technical problems, the technical scheme of the invention is as follows: a dual-channel self-reset valve comprises a valve body, three fluid channel interfaces are arranged on the valve body along the periphery of the valve body, and are communicated with each other in the valve body, a torsional spring limiting device is sleeved and fixed on the valve body above the fluid passage interface, the torsional spring limiting device comprises a cylindrical torsional spring mounting seat, a cylindrical limiting cylinder is coaxially and fixedly arranged in the torsional spring mounting seat, a torsional spring is coaxially sleeved outside the limiting cylinder, an arc-shaped limiting groove is arranged on the periphery of the torsion spring mounting seat, the tail end of the torsion spring is clamped at one end of the arc-shaped limiting groove, the head end extends outwards from the other end of the arc-shaped limiting groove, the center of the torsional spring limiting device is coaxially inserted with a valve core from top to bottom into the valve body, the top end of the valve core is controlled by a rotating handle to rotate, the lower surface of the tail end of the rotating handle is fixedly connected with an L-shaped plate to form a U-shaped groove, and the U-shaped groove is level with the torsion spring.

Furthermore, the three fluid channel interfaces are respectively a fluid inlet, a fluid outlet and a fluid sampling port, and the caliber of the fluid inlet is larger than the calibers of the fluid outlet and the fluid sampling port.

Furthermore, an annular cover plate is arranged on the top cover of the torsion spring mounting seat to prevent the torsion spring from falling off.

Furthermore, a fixed rod mounting ring is sleeved and fixed outside the valve body between the torsion spring limiting device and the three fluid channel interfaces, and a fixed rod is horizontally screwed outside the fixed rod mounting ring.

Further, the case is including the tip core that is the taper down, and the core upper end has linked firmly the screw rod, and this core middle part level runs through and has seted up the through-hole, and the core upper end is injectd and is sealed the vertical position of core through sealing ring and case fastener, and this case fastener spiro union is coaxial to be inserted and is established on the case, rotatory handle head end joint is in the screw rod upper end and is set up through a nut.

Further, the opening direction in U type groove is unanimous with the torsional spring head end towards tail end direction of rotation to drive torsional spring rotation and torsional spring reset top connect U type bottom of the groove portion area rotation handle to reset, the torsional spring tail end is buckled outwards and the joint is offered on the outer wall behind the arc spacing groove at the torsional spring mount pad.

Furthermore, the upper end of the limiting cylinder is higher than the torsion spring mounting seat, two limiting plates are arranged on the upper surface of the limiting cylinder along the circumference of the limiting cylinder, and the two limiting plates are higher than the plane of the cover plate; and a limiting block matched with the limiting plate is fixedly arranged beside the position, close to the head end, of the rotating handle.

A working method of a double-channel self-resetting valve is carried out according to the following steps: firstly, when all parts are in a working state, the head end of the torsion spring is positioned in a U-shaped groove, a fluid inlet is communicated with a fluid outlet through a through hole of a core body, an oil path from the fluid inlet to the fluid outlet, when an oil sample needs to be extracted for real-time oil sample analysis, only a rotating handle needs to be rotated in a forward direction, the torsion spring is driven to rotate in the forward direction under the action of the U-shaped groove, the torsion spring rotates towards the tail end of the torsion spring in an arc-shaped limiting groove at the moment, torsion torque is generated by torsion, meanwhile, the rotating handle drives a valve core to rotate, sampling is carried out when the oil path is from the fluid inlet to a fluid sampling port, external force to the rotating handle is unloaded afterwards, the torsion spring rotates in a reverse direction under the action of the torsion torque, then the torsion spring is abutted to; when the valve needs to be closed, the rotating handle only needs to be rotated continuously in the reverse direction, the rotating handle is far away from the head end of the torsion spring and cannot rotate, but the valve core rotates to close the valve.

Compared with the prior art, the invention has the following beneficial effects: the torsion generated by the torsion of the torsion spring drives the rotating handle to automatically reset, so that the problem of abnormal operation of the device caused by misoperation is effectively solved, the time for pumping the oil sample can be better controlled, and the oil leakage phenomenon can be effectively prevented.

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Drawings

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

FIG. 2 is a schematic diagram of an operating state of the embodiment of the present invention;

FIG. 3 is a schematic view of the valve body according to an embodiment of the present invention;

FIG. 4 is a detail view of the twist grip of an embodiment of the present invention;

FIG. 5 is a detail view of the valve cartridge in an embodiment of the present invention;

FIG. 6 is a top view of a valve body according to an embodiment of the present invention;

FIG. 7 is a cross-sectional view A-A of FIG. 6;

fig. 8 is a sectional view of B-B in fig. 6.

In the figure: 1-a valve body, 2-a fluid channel interface, 3-a torsion spring limiting device, 4-a torsion spring mounting seat, 5-a limiting cylinder, 6-a torsion spring, 7-an arc limiting groove, 8-a valve core, 9-a rotating handle, 10-an L-shaped plate, 11-a U-shaped groove, 12-a fluid inlet, 13-a fluid outlet, 14-a fluid sampling port, 15-a cover plate, 16-a fixed rod mounting ring, 17-a fixed rod, 18-a core body, 19-a screw rod, 20-a through hole, 21-a sealing ring, 22-a valve core fastener, 23-a nut, 24-a limiting plate and 25-a limiting block.

Detailed Description

In order to make the aforementioned and other features and advantages of the invention more comprehensible, embodiments accompanied with figures are described in detail below.

As shown in figures 1-8, a dual-channel self-reset valve, which is made of 304 friction-resistant stainless steel, comprises a valve body 1, three fluid passage ports 2 are formed on the valve body along the periphery thereof and are communicated with each other in the valve body, a torsion spring limiting device 3 is sleeved and fixed on the valve body above the fluid passage ports, the torsion spring limiting device comprises a cylindrical torsion spring mounting seat 4, a cylindrical limiting cylinder 5 is coaxially and fixedly arranged in the torsion spring mounting seat, a torsion spring 6 is coaxially sleeved outside the limiting cylinder, an arc-shaped limiting groove 7 is formed on the periphery of the torsion spring mounting seat, the tail end of the torsion spring is clamped at one end of the arc-shaped limiting groove, the head end of the torsion spring extends outwards from the other end of the arc-shaped limiting groove, a valve core 8 is coaxially inserted into the valve body from top to bottom, the top end of the valve core is controlled to rotate by a rotating handle 9, the lower surface of the tail end, a U-shaped groove 11 is formed, and the U-shaped groove is level with the torsion spring.

In the embodiment of the invention, the three fluid channel interfaces are respectively a fluid inlet 12, a fluid outlet 13 and a fluid sampling port 14, the caliber of the fluid inlet is larger than the calibers of the fluid outlet and the fluid sampling port, so that the fluid inlet can be changed from being communicated with the fluid outlet to being communicated with the fluid sampling port when the valve core rotates, and the integrated design of the three fluid channel interfaces reduces the number of interfaces among components and enhances the safety performance of the valve.

In the embodiment of the present invention, an annular cover plate 15 is covered on the top of the torsion spring mounting seat to prevent the torsion spring from falling off.

In the embodiment of the invention, the valve body between the torsion spring limiting device and the three fluid channel interfaces is sleeved and fixed with a fixed rod mounting ring 16, and the outer side of the fixed rod mounting ring is horizontally screwed with a fixed rod 17, so that the overall stress of the valve can be effectively reduced, and the stability of the valve is further improved.

In the embodiment of the invention, the valve core comprises a core body 18 with a conical tip end downwards, the upper end of the core body is fixedly connected with a screw rod 19, the middle part of the core body is horizontally penetrated and provided with a through hole 20, the vertical position of the core body is limited and sealed by a sealing ring 21 and a valve core fastener 22 at the upper end of the core body, the valve core fastener is screwed and coaxially inserted on the valve core, the fluid passages are ensured to be positioned in the same module, the number of interfaces on the fluid passages is reduced compared with that of a conventional valve, and the risk of oil leakage is reduced; the head end of the rotating handle is clamped at the upper end of the screw rod and is fastened through a nut 23, the use of the sealing ring and the valve core fastening piece is conventional technology, and redundant description is omitted here.

In the embodiment of the invention, the opening direction of the U-shaped groove is consistent with the rotation direction of the head end of the torsion spring towards the tail end so as to drive the torsion spring to rotate and the torsion spring to reset, the top of the torsion spring is connected with the bottom of the U-shaped groove and the rotary handle is arranged to reset, and the tail end of the torsion spring is bent outwards and clamped on the outer wall of the torsion spring mounting seat after the arc-shaped limiting groove is formed.

In the embodiment of the invention, the upper end of the limiting cylinder is higher than the torsion spring mounting seat, and the limiting cylinder is provided with two limiting plates 24 along the upper surface of the circumference thereof, and the two limiting plates are both higher than the plane of the cover plate; the side of the position close to the head end of the rotating handle is fixedly provided with a limiting block 25 matched with the limiting plate, and the two limiting plates are matched with the limiting block to limit the transitional rotating handle to avoid the abnormal operation.

A working method of a double-channel self-resetting valve is carried out according to the following steps: firstly, when all parts are in a working state, the head end of the torsion spring is positioned in a U-shaped groove, a fluid inlet is communicated with a fluid outlet through a through hole of a core body, an oil path from the fluid inlet to the fluid outlet, when an oil sample needs to be extracted for real-time oil sample analysis, only a rotating handle needs to be rotated in a forward direction, the torsion spring is driven to rotate in the forward direction under the action of the U-shaped groove, the torsion spring rotates towards the tail end of the torsion spring in an arc-shaped limiting groove at the moment, torsion torque is generated by torsion, meanwhile, the rotating handle drives a valve core to rotate, sampling is carried out when the oil path is from the fluid inlet to a fluid sampling port, external force to the rotating handle is unloaded afterwards, the torsion spring rotates in a reverse direction under the action of the torsion torque, then the torsion spring is abutted to; when the valve needs to be closed, the rotating handle only needs to be rotated continuously in the reverse direction, the rotating handle is far away from the head end of the torsion spring and cannot rotate, but the valve core rotates to close the valve.

The present invention is not limited to the above preferred embodiments, and any one can derive other various forms of the dual-channel self-resetting valve and the operation method thereof according to the teaching of the present invention. All equivalent changes and modifications made according to the claims of the present invention should be covered by the present invention.