CN207005182U - A kind of nuclear power station hydraulic damper multiple-grooved maintenance unit - Google Patents

Abstract

The utility model discloses a kind of nuclear power station hydraulic damper multiple-grooved maintenance unit, including gland, is sheathed on outside the damper piston axle and is connected to damper end face；Seal assembly, it is respectively arranged between the gland and the damper end face and between the gland and the piston shaft, for revealing gap from axially and radially sealing the hydraulic oil that is formed between the piston shaft and damper respectively.Nuclear power station hydraulic damper multiple-grooved maintenance unit provided by the utility model realizes the maintenance that damper oil leakage fault can be carried out in the case where not dismantling damper, ensures the normal usage function of damper, easy to operate technique effect simple in construction.

Description

A kind of nuclear power station hydraulic damper multiple-grooved maintenance unit

Technical field

It the utility model is related to maintenance of equipment field, more particularly to a kind of nuclear power station hydraulic damper multiple-grooved maintenance unit.

Background technology

Hydraulic damper is the nuclear power generating equipment that nuclear power station is commonly used, and in the running of power station, damper hydraulic oil occurs and let out Leakage, due to the special radiation environment at nuclear power station scene, and the operating cost that nuclear power station shutdown is repaired is, it is necessary to ensure to damp While device equipment recovers normal function, damper devices maintenance is completed with the most fast time.

In view of the economy of power station operation, it is best selection that live oil leak closure is carried out to oil leak damper.It is and normal Plugging device when mounted, need to dismantle damper connecting link pin, so that plugging device is by wearing damper piston axle And installation is completed, time-consuming, live risk is big, workload is cumbersome for the installation and removal of this device, and increases maintenance mans The degree-of-difficulty factor of work, increase the quality risk in the course of work.

It would therefore be highly desirable to a kind of hydraulic damper maintenance unit, solves existing peace during the maintenance damper of prior art center The problem of time-consuming for assembly and disassembly, live risk is big, workload is cumbersome.

Utility model content

The application solves maintenance resistance in the prior art by providing a kind of nuclear power station hydraulic damper multiple-grooved maintenance unit During Buddhist nun's device, the problem of time-consuming, live risk is big, workload is cumbersome is mounted and dismounted, damper can not dismantled by realizing In the case of carry out the maintenance of damper oil leakage fault, ensure the normal usage function of damper, easy to operate skill simple in construction Art effect.

The invention provides a kind of nuclear power station hydraulic damper multiple-grooved maintenance unit, including：Gland, it is sheathed on the damping Device piston shaft is outer and is connected to damper end face；

Seal assembly, is respectively arranged between the gland and the damper end face and the gland and the piston Between axle, for revealing gap from axially and radially sealing the hydraulic oil that is formed between the piston shaft and damper respectively.

Preferably, the gland is detachably spliced to form by the first gland and the second gland；

First gland and second gland offer corresponding be spliced to form in opening portion and each opening portion can The centre bore being hermetically sheathed on the piston shaft.

Preferably, the inwall of the centre bore of the formation of first gland and second gland offers the first sealing Groove, first gland and second gland offer the outside the centre bore towards the end face of the damper side Two seal grooves；

An at least outer surface for the gland is in plane, and the plane is used to be connected to the damper end face.

Preferably, the seal assembly includes first seal and second seal, and the first seal is arranged at institute State in the first seal groove, the second seal is arranged in second seal groove.

Preferably, the gland is plate-like, along the diagonal wire cutting of the tabular formed symmetrical first gland and Second gland；

Height of second seal groove along damper end face direction is more than the clearance distance in the leakage gap.

Preferably, in addition to fixation kit, the fixation kit include：

Two attachment screws, for first gland and the connection fastening of the second gland to be formed into the overall gland；

Four trip bolts, for the gland being fixed on the damper end face so that the gland and the resistance Buddhist nun's device seal seals the leakage gap.

Preferably, the gland corner respectively symmetrically offers four fastener holes, each fastener hole with it is described each The size of trip bolt matches, and each trip bolt is through each fastener hole and plugs into the damper end face So that the gland is fixed on the damper end face.

Preferably, the both ends of first gland and the connection offer two connection countersunk head unthreaded holes, each company Countersunk head unthreaded hole is connect perpendicular to the faying face of first gland and second gland and through the side wall of first gland；

The connection countersunk head unthreaded hole position is corresponded on second gland and is respectively arranged with two connection screw thread holes.

Preferably, each attachment screw through the connection countersunk head unthreaded hole and is plugged into the connection screw thread hole, with First gland and the connection fastening of the second gland are formed into the overall gland.

The one or more technical schemes provided in the embodiment of the present application, realizing can be in the case where dismantling damper The maintenance of damper oil leakage fault is carried out, ensures the normal usage function of damper, easy to operate technique effect simple in construction.

Brief description of the drawings

, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only It is embodiment of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, also Other accompanying drawings can be obtained according to the accompanying drawing of offer.

Fig. 1 is the nuclear power station hydraulic damper multiple-grooved maintenance unit structural representation that the embodiment of the present application provides；

Fig. 2 is the plane structure chart of gland 1 in Fig. 1；

Fig. 3 is the tomograph of the gland 1 in Fig. 2.

Embodiment

For the embodiment of the present application by providing a kind of nuclear power station hydraulic damper multiple-grooved maintenance unit, concrete thought is as follows：It is logical Cross and seal assembly is set respectively in the axially and radially direction of gland, you can while realize the radial and axial of damper oil leak Closure, the maintenance of damper oil leakage fault can be carried out in the case where not dismantling damper, ensures the normal use work(of damper Can, it is simple in construction, it is easy to operate and effectively improve maintenance efficiency.

In order to be better understood from above-mentioned technical proposal, below in conjunction with Figure of description and specific embodiment to upper State technical scheme to be described in detail, it should be understood that the specific features in the embodiment of the present application and embodiment are to the application The detailed description of technical scheme, rather than the restriction to technical scheme, in the case where not conflicting, the application is implemented Technical characteristic in example and embodiment can be mutually combined.

Fig. 1 is refer to, nuclear power station hydraulic damper multiple-grooved maintenance unit provided by the utility model includes：Gland 1, is arranged It is outer in the damper piston axle 4 and be connected to the end face of damper 5；Seal assembly 2, it is respectively arranged at the gland 1 and described Between the end face of damper 5 and between the gland 1 and the piston shaft 4, for respectively from axially and radially sealing the work The hydraulic oil leakage gap 6 formed between plug axle 4 and damper 5.With reference to shown in Fig. 1 and Fig. 2, due to needing to play sealing effect Fruit, therefore be not easy to directly be directly sleeved on gland 1 on piston shaft 4 from the end of piston shaft 4, therefore, in the present embodiment, Gland 1 is detachably spliced to form by the first gland 11 and the second gland 12；First gland 11 and second gland 12 are equal Offer opening portion and each opening portion is corresponding is spliced to form the centre bore 13 that can be hermetically sheathed on the piston shaft 4. The diameter of centre bore 13 is slightly larger than the diameter of the piston shaft 4.

In order that seal assembly 2 can respectively from gland 1 axially and radially to hydraulic oil leakage gap 6 sealing, The inwall of the centre bore 13 of the formation of first gland 11 and the second gland 12 offers the first seal groove 14, the first gland 11 and institute State the second gland 12 and offer the second seal groove 15 outside the centre bore 13 towards the end face of the side of damper 5；Institute At least outer surface for stating gland 1 is in plane, and the plane is used to be connected to the end face of damper 5.Seal assembly 2 includes the One seal 21 and second seal 22, the first seal 21 are arranged in first seal groove 14, and described second is close Sealing 22 is arranged in second seal groove 15.

In the present embodiment, gland 1 is plate-like, and symmetrical first gland is formed along the diagonal wire cutting of the tabular 11 and second gland 12；Height of second seal groove 15 along the end face direction of damper 5 is more than between the leakage The clearance distance of gap 6, with effectively from radial and axial seal leakage gap 6.

In the present embodiment, the first seal assembly 21 and the second seal assembly 22 be disconnect and it is bonded O-shaped close Seal, there is certain elasticity, under earthquake or nuclear power station unsteady operating conditions, dampener hydraulic oil produces high pressure, effect In on seal assembly 2, rather than act on gland end face, because active area is small, therefore caused active force is small, to gland 1 Thickness and gland 1 and the intensity requirement of trip bolt 32 of the end face of damper 5 substantially reduce, and effectively prevent gland 1 and combine Due to deformation caused by high pressure at face, the risk leaked at split surface is reduced.

In specific seal process, the first gland 11 and the second gland 12 are each sheathed on piston shaft 4 first, then Connection fastening overall gland 1 will be formed between first gland 11 and the second gland 12, respectively according to the first seal groove 14 and the The size of first seal assembly 21 and the second seal assembly 22 needed for the size determination of two seal grooves 15, covered piston by sealing strip Axle 4, then the first seal assembly 21 and the second seal assembly 22 for using certain adhesive technology to form closure respectively.In the first pressure Sealed at the faying face of the gland 12 of lid 11 and second by the way of gluing, prevent dampener hydraulic oil from the first gland 11 Leaked with the faying face of the second gland 12.

With reference to shown in Fig. 2 and Fig. 3, because gland 1 needs to be close on the end face of damper 5, therefore nuclear power station hydraulic damping Device multiple-grooved maintenance unit also includes fixation kit 3, and fixation kit 3 specifically includes：Two attachment screws 31, for by described first The connection fastening of the gland 12 of gland 11 and second forms the overall gland 1；Four trip bolts 32, for by the gland 1 It is fixed on the end face of damper 5 so that the gland 1 seals the leakage gap 6 with the damper seal assembly 2.

Specifically, 1 four jiaos of the gland respectively symmetrically offers four fastener holes 16, each fastener hole 16 with it is described The size of each trip bolt 32 matches, and each trip bolt 32 is through each fastener hole 16 and plugs into described The end face of damper 5 so that the gland 1 is fixed on the end face of damper 5, set four fastener holes 16 be to be able to by The leakage gap 6 of annular carries out consistent seal from radial direction all directions, avoids all directions sealing is uneven from causing to reveal.

Specifically, the both ends of first gland 11 and the connection offer two connection countersunk head unthreaded holes 111, Mei Yisuo Connection countersunk head unthreaded hole 111 is stated perpendicular to the faying face of first gland 11 and second gland 12 and through described first The side wall of gland 11；The position of connection countersunk head unthreaded hole 111 is corresponded on second gland and is respectively arranged with two connection screw threads Hole 121.In specific implementation process, each attachment screw 31 is through the connection countersunk head unthreaded hole 111 and plugs into described Connection screw thread hole 121, the gland 12 of the first gland 11 and second is connected into fastening and forms the overall gland 1.

Implement nuclear power station hydraulic damper multiple-grooved maintenance unit provided by the utility model, have the following technical effect that：

1) sealing blocking to damper piston oil leakage fault can be realized in the case where not dismantling damper；

2) by the way that in the axially and radially setting seal groove of gland, damper shaft only can be achieved with two seals part respectively Sealed to the oil leak with radial direction, and greatly increase the convenience of assembling；

3) under earthquake or nuclear power station unsteady operating conditions, dampener hydraulic oil produces high pressure, acts on seal, Rather than act on gland end face, because active area is small, therefore caused active force is small, the thickness and gland to gland with The connecting bolt intensity requirement of damper end face substantially reduces, and effectively prevent at gland faying face due to change caused by high pressure Shape, reduce the risk leaked at split surface；

4) sealed at the faying face of the first gland and the second gland by the way of gluing, prevent dampener hydraulic Oil leaks at the faying face of the first gland and the second gland.

Although having been described for preferred embodiment of the present utility model, those skilled in the art once know substantially Creative concept, then other change and modification can be made to these embodiments.So appended claims are intended to be construed to wrap Include preferred embodiment and fall into having altered and changing for the scope of the utility model.

Obviously, those skilled in the art can carry out various changes and modification without departing from this practicality to the utility model New spirit and scope.So, if these modifications and variations of the present utility model belong to the utility model claims and Within the scope of its equivalent technologies, then the utility model is also intended to comprising including these changes and modification.

Claims (9)

1. A kind of 1. nuclear power station hydraulic damper multiple-grooved maintenance unit, it is characterised in that including：

   Gland (1), it is sheathed on the damper piston axle (4) outside and is connected to damper (5) end face；

   Seal assembly (2), be respectively arranged between the gland (1) and the damper (5) end face and the gland (1) and Between the piston shaft (4), for being formed respectively between the piston shaft (4) and damper (5) from axially and radially sealing Hydraulic oil leakage gap (6).
2. 2. nuclear power station hydraulic damper multiple-grooved maintenance unit according to claim 1, it is characterised in that the gland (1) Detachably it is spliced to form by the first gland (11) and the second gland (12)；

   First gland (11) and second gland (12) offer the corresponding splicing shape in opening portion and each opening portion Into the centre bore (13) that can be hermetically sheathed on the piston shaft (4).
3. 3. nuclear power station hydraulic damper multiple-grooved maintenance unit according to claim 2, it is characterised in that first gland (11) and the inwall of centre bore (13) of formation of second gland (12) offers the first seal groove (14), first pressure Lid (11) and second gland (12) offer towards the end face of the damper (5) side outside the centre bore (13) Second seal groove (15)；

   An at least outer surface for the gland (1) is in plane, and the plane is used to be connected to the damper (5) end face.
4. 4. nuclear power station hydraulic damper multiple-grooved maintenance unit according to claim 3, it is characterised in that the seal assembly (2) first seal (21) and second seal (22) are included, the first seal (21) is arranged at first seal groove (14) in, the second seal (22) is arranged in second seal groove (15).
5. 5. nuclear power station hydraulic damper multiple-grooved maintenance unit according to claim 4, it is characterised in that the gland (1) It is plate-like, form symmetrical first gland (11) and second gland (12) along the diagonal wire cutting of the tabular；

   Height of second seal groove (15) along the damper (5) end face direction is more than the gap of leakage gap (6) Distance.
6. 6. nuclear power station hydraulic damper multiple-grooved maintenance unit according to claim 5, it is characterised in that also include fixed group Part (3), the fixation kit (3) include：

   Two attachment screws (31), for first gland (11) and the second gland (12) connection fastening to be formed into overall institute State gland (1)；

   Four trip bolts (32), for the gland (1) to be fixed on the damper (5) end face so that the gland (1) leakage gap (6) is sealed with the damper seal (2).
7. 7. nuclear power station hydraulic damper multiple-grooved maintenance unit according to claim 6, it is characterised in that the gland (1) Corner respectively symmetrically offers four fastener holes (16), the chi of each fastener hole (16) and each trip bolt (32) Very little to match, each trip bolt (32) is through each fastener hole (16) and plugs into the damper (5) end face So that the gland (1) is fixed on the damper end face (5).
8. 8. nuclear power station hydraulic damper multiple-grooved maintenance unit according to claim 7, it is characterised in that first gland (11) two connection countersunk head unthreaded holes (111) are offered with the both ends of the connection, each connection countersunk head unthreaded hole (111) is vertical In the faying face of first gland (11) and second gland (12) and through the side wall of first gland (11)；

   Described connection countersunk head unthreaded hole (111) position is corresponded on second gland and is respectively arranged with two connection screw thread holes (121).
9. 9. nuclear power station hydraulic damper multiple-grooved maintenance unit according to claim 8, it is characterised in that each connection Screw (31) is through the connection countersunk head unthreaded hole (111) and plugs into the connection screw thread hole (121), by first gland (11) and the second gland (12) connection fastening forms the overall gland (1).