CN205297815U - Hydraulic turbine servomotor oil distributor seal structure - Google Patents

Abstract

Hydraulic turbine servomotor oil distributor seal structure, including servomotor support, oil distributor, the oil distributor includes pivot, " O " type sealing washer, cylinder body, its characterized in that, the inner wall bottommost of cylinder body, inner wall top do not are equipped with the seal groove that the cover was equipped with " O " type sealing washer, the upper and lower portion of cylinder body all is equipped with oil spilling groove and oil spilling hole. Compared with the prior art, the utility model discloses having increased the suit, to carry out multiple structure at the sealing washer of oil distributor cylinder body inner wall sealed, makes the sealing performance of oil distributor obtain very big improvement, and the oil spilling groove of increase can cause the oil leak groove with the inside oil spilling of oil distributor with the oil spilling pore structure and retrieve, and it is extravagant to reduce the oil spilling, can avoid the oil spilling to permeate the river again and cause environmental pollution, and simultaneously, the utility model discloses simple structure, the sealing washer simple installation, through on probation, it has the oil impregnate phenomenon again not see, and life is from original not enough one year extension to 3 years.

Description

Water turbine servomotor oil distributor sealed structure

Technical field

The utility model belongs to water turbine operating mechanism service technique field, is specifically related to the oil distributor sealed structure of water turbine servomotor.

Background technology

Servomotor is the important component part of turbine gate mechanism, and it adopts rocking bar to be connected with the gate ring of turbine gate mechanism, according to flow, situation of exerting oneself, regulates distributor aperture size thus realizes the switch of water-in. For ensureing that on top cover of hydraulic turbine set, symmetrically arranged multiple servomotor stable action is consistent, is equipped with oil distributor device on each servomotor. Existing oil distributor device mainly adopts many " O " RunddichtringOs to be enclosed within oil distributor pivot pin to seal, in unit running process, along with the operation of servomotor, oil distributor pivot pin also followed by rotation, easily cause the ring wear being enclosed within oil distributor pivot pin, thus cause the pressure oil of oil distributor inside outwards to be overflowed by sealing-ring seepage, patrolling and examining weekly often finding, oil distributor flange in the bottom face and top all have and oozes oil phenomenon on a small quantity, can only often change sealing-ring, it may also be useful to the life-span was less than 1 year. It thus is seen that the oil distributor Seal Design of existing water turbine servomotor exists the defects such as sealing weak effect, work-ing life is short, and ooze oil and easily flow into river, environment is caused bigger pollution.

Summary of the invention

For the deficiencies in the prior art, the utility model aims to provide the water turbine servomotor oil distributor sealed structure that a kind of structure is simple, install simplicity, good seal performance, long service life, it is possible to permanently effective avoid the pressure oil seepage of oil distributor inside outwards to overflow.

In order to realize above-mentioned purpose, the utility model have employed following technical scheme: a kind of water turbine servomotor oil distributor sealed structure, comprise servomotor bearing, oil distributor, described oil distributor comprises pivot pin, " O " RunddichtringO A, cylinder body, its key is, inwall bottommost, the upper inside wall of described cylinder body is respectively equipped with " " " type sealing groove, " [" type sealing groove, described " " " type sealing groove and " [" type sealing groove is set with " O " RunddichtringO B; Described cylinder body upper and lower part is equipped with oil spilling groove and oil overflow hole, and described oil spilling groove and oil overflow hole are all positioned between " O " RunddichtringO A and " O " RunddichtringO B.

Compared with prior art, the utility model water turbine servomotor oil distributor sealed structure is on the basis of existing structure, add the sealing-ring being sleeved on oil distributor inboard wall of cylinder block and carry out multiplet structure sealing, the sealing property of oil distributor is greatly improved, inner for oil distributor oil spilling can be caused leakage of oil groove and reclaim by the oil spilling groove increased and oil overflow hole structure, oil spilling waste can be reduced, oil spilling can be avoided again to infiltrate river and cause environmental pollution; Meanwhile, the utility model structure is simple, and sealing-ring is installed easy, through on probation, have no to have again and oozes oil phenomenon, it may also be useful to the life-span extended to 3 years less than 1 year from original.

Accompanying drawing explanation

Accompanying drawing 1 is the schematic diagram of existing water turbine servomotor oil distributor sealed structure.

Accompanying drawing 2 is the schematic diagram of the utility model water turbine servomotor oil distributor sealed structure.

Embodiment

Being described in further detail by the utility model below in conjunction with drawings and Examples, the present embodiment is only do more clearly bright to the utility model, instead of to restriction of the present utility model.

The oil distributor sealed structure being illustrated in figure 1 existing water turbine servomotor, comprises servomotor bearing 1, oil distributor 2,4 �� 262.8 �� 8.6 " O " RunddichtringO A4 that described oil distributor 2 comprises pivot pin 3, be sleeved on pivot pin 3 carries out sealing and cylinder body 5. In water turbine set operational process, along with the operation of servomotor, oil distributor pivot pin also followed by rotation, easily cause the ring wear being enclosed within oil distributor pivot pin, thus cause the pressure oil of oil distributor inside outwards to be overflowed by sealing-ring seepage, patrolling and examining weekly often finding, oil distributor flange in the bottom face and top all have and oozes oil phenomenon on a small quantity, can only often change sealing-ring, it may also be useful to the life-span was less than 1 year. It thus is seen that the oil distributor Seal Design of existing water turbine servomotor exists the defects such as sealing weak effect, work-ing life is short, and ooze oil and easily flow into river, environment is caused bigger pollution.

It is illustrated in figure 2 the oil distributor sealed structure of the utility model water turbine servomotor, on the basis of existing structure, by being provided with 1 " " " type sealing groove and be provided with 1 " [" type sealing groove; and at " " " type sealing groove and " be respectively installed with 1 �� 278.8 �� 8.6 " O " RunddichtringO B6 in [" type sealing groove in cylinder body 5 upper inside wall in the processing of cylinder body 5 inwall bottommost, carry out multiplet structure sealing, substantially increase the sealing property of oil distributor; Simultaneously, it is provided with oil spilling groove 7 and �� 6 oil overflow hole 8 by all processing in cylinder body 5 upper and lower part, wherein, top oil spilling groove 7 and �� 6 oil overflow hole 8 are positioned between top " O " RunddichtringO A4 and " O " RunddichtringO B6, bottom oil spilling groove 7 and �� 6 oil overflow hole 8 are positioned between top " O " RunddichtringO A4 and " O " RunddichtringO B6, inner for oil distributor oil spilling can be caused leakage of oil groove to reclaim, oil spilling waste can be reduced, oil spilling can be avoided again to infiltrate river and cause environmental pollution. The present embodiment structure is simple, and sealing-ring is installed easy, through on probation, have no to have again and oozes oil phenomenon, it may also be useful to the life-span extended to 3 years less than 1 year from original.

More than show and describe ultimate principle of the present utility model and main characteristic sum advantage of the present utility model. The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model. The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims (1)

1. water turbine servomotor oil distributor sealed structure, comprise servomotor bearing (1), oil distributor (2), described oil distributor (2) comprises pivot pin (3), " O " RunddichtringO A(4), cylinder body (5), it is characterized in that, inwall bottommost, the upper inside wall of described cylinder body (5) be respectively equipped with " " " type sealing groove, " [" type sealing groove, described " " " type sealing groove and " [" type sealing groove is set with " O " RunddichtringO B(6); Described cylinder body (5) upper and lower part is equipped with oil spilling groove (7) and oil overflow hole (8), and described oil spilling groove (7) and oil overflow hole (8) are all positioned at " O " RunddichtringO A(4) and " O " RunddichtringO B(6) between.