阅读说明：本技术 可视化油流观察孔盖 (Visual oil flow observation hole cover ) 是由 刘香建 彭伟军 杨永宏 周万竣 万双民 宋杰 李侃 苏学龙 王健 卢晓强 于 2019-11-16 设计创作，主要内容包括：本发明公开了一种可视化油流观察孔盖,包括底座、上端盖和观察孔盖；所述上端盖包括具有台阶孔的柱体,所述台阶孔贯穿于所述柱体的两个端面,所述台阶孔上段的内径小于台阶孔中段的内径,台阶孔中段的内径小于台阶孔下段的内径,所述台阶孔下段具有第一螺纹；所述观察孔盖呈圆形,该观察孔盖采用透明材料制成,所述观察孔盖的直径大于台阶孔上段的内径,且观察孔盖与台阶孔中段配合；所述底座呈环形,且底座的内径小于观察孔盖的直径,所述底座的上端设有台阶,该台阶上设有第二螺纹,所述底座与上端盖之间通过第一螺纹和第二螺纹相连接。本发明能够提高工作效率,降低人身和设备风险。(The invention discloses a visual oil flow observation hole cover which comprises a base, an upper end cover and an observation hole cover; the upper end cover comprises a cylinder body with a step hole, the step hole penetrates through two end faces of the cylinder body, the inner diameter of the upper section of the step hole is smaller than that of the middle section of the step hole, the inner diameter of the middle section of the step hole is smaller than that of the lower section of the step hole, and the lower section of the step hole is provided with a first thread; the observation hole cover is circular and made of transparent materials, the diameter of the observation hole cover is larger than the inner diameter of the upper section of the stepped hole, and the observation hole cover is matched with the middle section of the stepped hole; the base is annular, and the internal diameter of base is less than the diameter of observation handhole door, the upper end of base is equipped with the step, is equipped with the second screw thread on this step, be connected through first screw thread and second screw thread between base and the upper end cover. The invention can improve the working efficiency and reduce the personal and equipment risks.)

1. A visual oil flow sight hole cover, comprising: comprises a base (1), an upper end cover (2) and an observation hole cover (3);

the upper end cover (2) comprises a column body with a step hole (2 a), the step hole (2 a) penetrates through two end faces of the column body, the inner diameter of the upper section (2 b) of the step hole is smaller than that of the middle section (2 c) of the step hole, the inner diameter of the middle section (2 c) of the step hole is smaller than that of the lower section (2 d) of the step hole, and the lower section (2 d) of the step hole is provided with a first thread (2 e);

the observation hole cover (3) is circular, the observation hole cover (3) is made of transparent materials, the diameter of the observation hole cover (3) is larger than the inner diameter of the upper section (2 b) of the stepped hole, and the observation hole cover (3) is matched with the middle section (2 c) of the stepped hole;

the base (1) is annular, and the internal diameter of base (1) is less than the diameter of observation handhole door (3), the upper end of base (1) is equipped with step (1 a), is equipped with second screw thread (1 b) on this step (1 a), be connected through first screw thread (2 e) and second screw thread (1 b) between base (1) and upper end cap (2).

2. The visual oil flow sight hole cover of claim 1, wherein: the upper end face (2 f) of the upper end cover (2) is inclined downwards from the outside to the inside.

3. The visual oil flow sight hole cover of claim 1 or 2, wherein: the base (1) and the upper end cover (2) are both made of stainless steel materials.

4. The visual oil flow sight hole cover of claim 3, wherein: the diameter of the base (1) at the step (1 a) is larger than the inner diameter of an oil flow observation hole on a water guide oil groove of the water-turbine generator set.

5. The visual oil flow sight hole cover of claim 1, 2 or 4, wherein: the diameter of the observation hole cover (3) is larger than the inner diameter of an oil flow observation hole on a water guide oil groove of the water-turbine generator set.

6. The visual oil flow sight hole cover of claim 1, 2 or 4, wherein: the observation hole cover (3) is made of organic glass.

Technical Field

The invention belongs to the technical field of closed oil groove observation holes, and particularly relates to a visual oil flow observation hole cover.

Background

Because the water guide oil groove of the Tiandi power plant has risks of oil emulsification, water inlet, abnormal oil level and the like, daily itinerant work needs to close the oil quality and oil level change in the water guide oil groove so as to judge whether the water guide oil groove is filled with water or not and whether the oil quality and oil level of turbine oil in the water guide oil groove are normal or not. However, since the oil flow observation holes of the water guide oil grooves of the secondary hydroelectric generating main plants #1- #6 of the natural bridges are made of simple and non-transparent materials, the operation and maintenance personnel need to open the oil flow observation hole covers of the water guide oil grooves to check the oil quality and the oil level of the water guide oil grooves. This approach presents the following risks:

(1) the oil flow observation hole cover of the water guide oil groove is close to the rotating part of the unit water turbine, and the rotating part has the risk of hurting people when the oil flow observation hole cover is opened;

(2) when an oil flow observation hole cover of the water guide oil groove is opened, a worker may stand on the rotating ring to operate, and the risk of clamping and falling injury of the worker due to the action of the rotating ring exists;

(3) after opening the oil flow observation handhole door of water guide oil groove, exist the foreign matter and fall into in the water guide oil groove to lead to the damage of unit axle bush, the risk that the unit was forced to shut down.

Therefore, it is necessary to develop a new visual oil flow observation hole cover.

Disclosure of Invention

The invention aims to provide a visual oil flow observation hole cover which can improve the working efficiency, reduce the risks of human bodies and equipment and increase the probability and the timeliness of defect discovery.

The visual oil flow observation hole cover comprises a base, an upper end cover and an observation hole cover;

the upper end cover comprises a cylinder body with a step hole, the step hole penetrates through two end faces of the cylinder body, the inner diameter of the upper section of the step hole is smaller than that of the middle section of the step hole, the inner diameter of the middle section of the step hole is smaller than that of the lower section of the step hole, and the lower section of the step hole is provided with a first thread;

the observation hole cover is circular and made of transparent materials, the diameter of the observation hole cover is larger than the inner diameter of the upper section of the stepped hole, and the observation hole cover is matched with the middle section of the stepped hole;

the base is annular, and the internal diameter of base is less than the diameter of observation handhole door, the upper end of base is equipped with the step, is equipped with the second screw thread on this step, be connected through first screw thread and second screw thread between base and the upper end cover.

The upper end face of the upper end cover is inclined downwards from the outside to the inside; the upper end face of the upper end cover is an inclined plane, so that the observation hole cover can be protected from being scratched by foreign objects, and the whole weight of the hole cover can be reduced; meanwhile, the inclined plane can increase the light rays entering the observation hole obliquely, so that the observation hole is brighter, and the observation hole is favorable for observing the conditions in the observation hole; finally, when people observe, the person can be far away from the rotating part and obliquely irradiates to inspect, so that the person can keep a safe distance from the dangerous part, and personal risks are eliminated.

The base and the upper end cover are both made of stainless steel materials; the paint spraying and rust prevention are not needed, the corrosion prevention cost is saved, and the environment is protected.

The diameter of the base at the step is larger than the inner diameter of an oil flow observation hole on a water guide oil groove of the water-turbine generator set; when arranging the lower extreme of base in the observation hole, the step of base supports on the outer terminal surface of observation hole to make visual oil stream observation handhole door and oil stream observation hole closely cooperate, in order to prevent that visual oil stream observation handhole door from dropping into water guide oil groove, and do not have the risk of removal.

The diameter of the observation hole cover is larger than the inner diameter of an oil flow observation hole in a water guide oil groove of the water turbine generator set, so that the observation hole cover is prevented from falling into the water guide oil groove.

The observation hole cover is made of organic glass and has the advantages of good transparency, good chemical stability, good mechanical property, good weather resistance and the like.

The invention has the beneficial effects that:

(1) after the visual oil flow observation hole cover is installed, the oil quality and the oil level in the oil groove can be checked without opening the observation hole cover when the oil flow observation hole cover stands outside a safe distance, so that the man-machine effect is improved, and the personal, equipment and power grid risks existing in oil level and oil quality observation are eliminated.

(2) After the visual oil stream observation handhole door of installation, not only the personnel of patrolling and examining, other personnel from other processes can both discover the abnormal conditions of oil in the oil groove to can discover the problem fast, in time eliminate the defect, avoid the long-time operation of taking a illness of equipment, prolong the life cycle of equipment, guaranteed unit safety, steady operation simultaneously.

(3) The base and the upper end cover are made of stainless steel materials, so that the paint spraying and rust prevention are not needed, the corrosion prevention cost is saved, and the environment is more protected.

(4) The dismounting is convenient and fast, and no auxiliary tool is needed.

Drawings

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

FIG. 2 is a cross-sectional view of the upper end cap of the present invention;

FIG. 3 is a cross-sectional view of the base of the present invention;

in the figure: 1. the inspection hole comprises a base, 1a, a step, 1b, a second thread, 2, an upper end cover, 2a, a step hole, 2b, an upper section of the step hole, 2c, a middle section of the step hole, 2d, a lower section of the step hole, 2e, a first thread, 2f, an upper end face, 3 and an observation hole cover.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

As shown in fig. 1 to 3, the visual oil flow manhole cover in the present embodiment includes a base 1, an upper end cap 2, and a manhole cover 3. The upper end cover 2 comprises a column body with a step hole 2a, the step hole 2a penetrates through two end faces of the column body, the inner diameter of the upper section 2b of the step hole is smaller than that of the middle section 2c of the step hole, the inner diameter of the middle section 2c of the step hole is smaller than that of the lower section 2d of the step hole, and the lower section 2d of the step hole is provided with a first thread 2 e. The observation hole cover 3 is circular, the observation hole cover 3 is made of transparent materials, the diameter of the observation hole cover 3 is larger than the inner diameter of the upper section 2b of the stepped hole, and the observation hole cover 3 is matched with the middle section 2c of the stepped hole. The base 1 is annular, and the internal diameter of base 1 is less than the diameter of observation handhole door 3, the upper end of base 1 is equipped with step 1a, is equipped with second screw thread 1b on this step 1a, be connected through first screw thread 2e and second screw thread 1b between base 1 and the upper end cover 2.

As shown in fig. 2, in the present embodiment, the upper end surface 2f of the upper end cap 2 is inclined downward from outside to inside, and the upper end surface 2f of the upper end cap 2 is an inclined surface, so that the observation hole cover 3 can be protected from being scratched by a foreign object, and the overall weight of the hole cover can be reduced; meanwhile, the inclined plane can increase the light rays entering the observation hole obliquely, so that the observation hole is brighter, and the observation hole is favorable for observing the conditions in the observation hole; finally, when people observe, the person can be far away from the rotating part and obliquely irradiates to inspect, so that the person can keep a safe distance from the dangerous part, and personal risks are eliminated.

In this embodiment, base 1 and upper end cover 2 all adopt stainless steel material to make, need not to spray paint rust-resistant, have saved anticorrosive cost, also environmental protection more simultaneously.

In this embodiment, the diameter of the observation hole cover 3 is larger than the inner diameter of the oil flow observation hole on the water guide oil groove of the hydroelectric generating set, so as to prevent the observation hole cover 3 from falling into the water guide oil groove. The observation hole cover 3 is made of organic glass and has the advantages of good transparency, good chemical stability, good mechanical property, good weather resistance and the like.

During assembly, the observation hole cover 3 is firstly installed in the stepped hole 2a of the upper end cover 2, then the base 1 is screwed into the upper end cover 2, and the observation hole cover 3 is tightly pressed through the matching of the upper end cover 2 and the base 1. Because the diameter of base 1 in step 1a department is greater than the internal diameter of the oil flow observation hole on the water oil guide groove of hydroelectric set, when placing the lower extreme of base 1 in the oil flow observation hole, step 1a of base 1 supports on the outer terminal surface of oil flow observation hole to make visual oil flow observation handhole door and oil flow observation hole closely cooperate, ensured that visual oil flow observation handhole door does not have the risk that drops and remove.