CN216407024U

CN216407024U - Semi-synchronous non-contact high-pressure oil receiver

Info

Publication number: CN216407024U
Application number: CN202122667722.0U
Authority: CN
Inventors: 张涛; 陶红; 董德焕; 徐宏光; 王长志
Original assignee: Harbin Electric Machinery Co Ltd
Current assignee: Harbin Electric Machinery Co Ltd
Priority date: 2021-11-03
Filing date: 2021-11-03
Publication date: 2022-04-29
Anticipated expiration: 2031-11-03

Abstract

The utility model discloses a semi-synchronous non-contact high-pressure oil receiver, which consists of an oil receiver tile, an oil receiver rod, an upper ball bearing, a lower retaining ring, an outer retaining ring, an inner retaining ring, a blank cap, an upper retaining ring, a first sealing ring, a screw plug, a support, a guide rod, a ball bearing and a second sealing ring. According to the utility model, the unbalanced force of the oil supply head rod is transmitted to the support through the ball bearing, the bearing structure and the bearing capacity are considered, the oil supply head rod is ensured not to be contacted with an oil supply head tile, and the transmission problem of the unbalanced force and the friction problem of the oil supply head rod and the oil supply head tile are solved; the oil-supply head is provided with the axial movement guide rod of the oil-supply head bush, so that the oil-supply head rod and the oil-supply head bush are semi-synchronous, and the working stability of the oil-supply head is ensured; according to the utility model, the seal is arranged between the support and the oil-supply head tile, so that oil mist is prevented from overflowing.

Description

Semi-synchronous non-contact high-pressure oil receiver

Technical Field

The utility model relates to the technical field of hydraulic turbine mechanical equipment, in particular to a semi-synchronous non-contact high-pressure oil receiver which is mainly applied to a shaft through-flow propeller type unit.

Background

The oil supply rod of the oil supply head of the axial-flow rotary propeller unit rotates along with the rotating wheel, and the rotation mainly generates two adverse effects on the operation of the unit: firstly, unbalanced force; secondly, heat is generated by rotational friction. These two adverse effects are complementary and aggravated in the high-pressure oil receiver, so that a high-pressure oil receiver needs to be designed.

In recent years, with the higher pressure grade of a unit speed regulator, the traditional floating tile oil-supply head, contact type sealing oil-supply head and the like are limited by structures, and various problems or hazards may occur under the ultrahigh pressure working condition. For example, the oil leakage of the floating bush oil receiver under high pressure is increased, the swing of a shaft system is increased, the bush abrasion of the oil receiver is aggravated, and the like, so that the oil supply efficiency of the cavity of the runner servomotor is influenced, and the impeller is moved violently or refused to move; the contact type sealing oil-supply head has accelerated abrasion under high pressure and may have adhesion problem. According to related researches, when the clearance value is 0.1mm and the pressure grade is 16MPa, due to reasons such as oil quality, machining tolerance and the like, an oil receiver rod can be adhered to an oil receiver tile when rotating, so that the oil receiver tile is driven to rotate, and then an accident of cutting off a high-pressure oil pipe occurs. In addition, the oil mist problem of the oil-supply head also needs to be solved urgently.

SUMMERY OF THE UTILITY MODEL

The utility model provides a semi-synchronous non-contact high-pressure oil receiver which can avoid abrasion of oil receiver tiles, prolong the service life and save the cost. And a seal is arranged between the oil-supply head tile and the support to prevent oil mist from overflowing. The technical scheme of the utility model is as follows: the oil-supply head comprises an oil-supply head tile, an oil-supply head rod, an upper ball bearing, a lower retaining ring, an outer retaining ring, an inner retaining ring, a blank cap, an upper retaining ring, a first sealing ring, a plug, a support, a guide rod, a ball bearing and a second sealing ring, wherein the oil-supply head tile is arranged on the outer side of the oil-supply head rod, the upper ball bearing and the lower ball bearing are arranged in the middle of the oil-supply head tile, and the outer retaining ring, the guide rod, the ball bearing and the second sealing ring are arranged on the outer side of the oil-supply head tile.

In the semi-synchronous non-contact high-pressure oil receiver, bearing alloy is paved on the inner surface of an oil receiver tile.

In the semi-synchronous non-contact high-pressure oil receiver, the oil receiver tile is arranged outside the oil receiver rod and is not in contact with the oil receiver rod.

In the semi-synchronous non-contact high-pressure oil receiver, an upper ball bearing and a lower ball bearing are arranged between the oil receiver tile and the oil receiver rod.

In the semi-synchronous non-contact high-pressure oil receiver, a bracket is arranged on the outer side of an oil receiver tile.

In the semi-synchronous non-contact high-pressure oil receiver, a guide rod is arranged on the support.

In the semi-synchronous non-contact high-pressure oil receiver, a second sealing ring is arranged on the support.

Drawings

Fig. 1 is a structural sectional view of a semi-synchronous non-contact high-pressure oil receiver.

The notation in the figure is: 1-oil head tile; 2-oil head rod; 3-upper ball bearings; 4-lower ball bearings; 5-a lower baffle ring; 6-outer retainer ring; 7-inner retainer ring; 8-covering the cover; 9-upper check ring; 10-a first sealing ring; 11-plug; 12-a scaffold; 13-a guide bar; 14-ball bearings; 15-second sealing ring.

Detailed Description

The utility model relates to a semi-synchronous non-contact high-pressure oil supply head, which consists of an oil supply head tile 1, an oil supply head rod 2, an upper ball bearing 3, a lower ball bearing 4, a lower retaining ring 5, an outer retaining ring 6, an inner retaining ring 7, a blank cap 8, an upper retaining ring 9, a first sealing ring 10, a screw plug 11, a support 12, a guide rod 13, a ball bearing 14 and a second sealing ring 15.

Bearing alloy is laid on the inner side of the oil-supply head tile 1 and used for reducing friction factors between the abraded ball bearing and the oil-supply head rod 2 and reducing the possibility of adhesion. The oil-supply head tile body is provided with an oil inlet hole, an oil outlet hole and an oil return hole, the outer side stroke range of the oil-supply head tile is finely processed, and a guide groove is formed. The upper side of the oil-supply head tile 1 is provided with a blank cap 8 for sealing.

The oil supply head rod 2 is connected with the rotating wheel operation oil pipe to move synchronously, is connected with the oil supply head tile 1 through a bearing, and is axially positioned by a retainer ring. An oil through hole is formed in the oil-supply head rod 1 and is communicated with the oil hole in the oil-supply head tile.

The guide rod 13 is matched with the bracket 15 through the ball bearing 14, and the smooth action of the oil receiver is ensured.

A seal is arranged between the support 12 and the oil-supply head tile 1 to prevent oil mist in the oil-supply head from directly overflowing.

The lower baffle ring 5 is arranged at the lower side of the oil receiver and used for blocking oil thrown out when the oil receiver rod 2 rotates and supporting the lower ball bearing.

The working principle is as follows: the semi-synchronous non-contact high-pressure oil receiver is suitable for a high-pressure-grade axial through-flow propeller-rotating type hydraulic turbine set. According to the utility model, the unbalanced force of the oil supply head rod is transmitted to the support through the ball bearing, the bearing structure and the bearing capacity are considered, the oil supply head rod is ensured not to be contacted with an oil supply head tile, and the transmission problem of the unbalanced force and the friction problem of the oil supply head rod and the oil supply head tile are solved; the oil-supply head is provided with the axial movement guide rod of the oil-supply head bush, so that the oil-supply head rod and the oil-supply head bush are semi-synchronous, and the working stability of the oil-supply head is ensured; according to the utility model, the seal is arranged between the support and the oil-supply head tile, so that oil mist is prevented from overflowing.

When the oil supply device works under a high-pressure condition, the ball bearing bears unbalanced force, the oil supply head rod is not in contact with the oil supply head tile, the problem of adhesion or blockage is avoided, and the uniform clearance between the oil supply head rod and the oil supply head tile and the stability of an oil supply pressure system are ensured. The oil receiver rod and the oil receiver act semi-synchronously, and the working state of the oil receiver tile is not influenced in the axial direction.

Claims

1. A semi-synchronous non-contact high-pressure oil receiver is characterized in that: the oil-supply-free oil-supply device is composed of an oil-supply-free tile (1), an oil-supply-free rod (2), an upper ball bearing (3), a lower ball bearing (4), a lower retaining ring (5), an outer retaining ring (6), an inner retaining ring (7), a blank cap (8), an upper retaining ring (9), a first sealing ring (10), a plug (11), a support (12), a guide rod (13), a ball bearing (14) and a second sealing ring (15), wherein the oil-supply-free tile (1) is arranged on the outer side of the oil-supply-free rod (2), the middle of the oil-supply-free tile is provided with the upper ball bearing (3) and the lower ball bearing (4), and the outer retaining ring (6), the guide rod (13), the ball bearing (14) and the second sealing ring (15) are arranged on the outer side of the oil-supply-free tile (1).

2. The semi-synchronous non-contact high-pressure oil receiver according to claim 1, characterized in that: and bearing alloy is laid on the inner surface of the oil-supply head tile (1).

3. The semi-synchronous non-contact high-pressure oil receiver according to claim 1, characterized in that: the oil-supply head tile (1) is arranged on the outer side of the oil-supply head rod (2) and is not in contact with the oil-supply head tile.

4. The semi-synchronous non-contact high-pressure oil receiver according to claim 1, characterized in that: an upper ball bearing (3) and a lower ball bearing (4) are arranged between the oil-supply head tile (1) and the oil-supply head rod (2).

5. The semi-synchronous non-contact high-pressure oil receiver according to claim 1, characterized in that: and a bracket (12) is arranged on the outer side of the oil-supply head tile (1).

6. The semi-synchronous non-contact high-pressure oil receiver according to claim 1, characterized in that: the bracket (12) is provided with a guide rod (13).

7. The semi-synchronous non-contact high-pressure oil receiver according to claim 1, characterized in that: and a second sealing ring (15) is arranged on the bracket (12).