CN204828898U

CN204828898U - Dog for power plant

Info

Publication number: CN204828898U
Application number: CN201520471799.2U
Authority: CN
Inventors: 张士龙
Original assignee: Huadian Electric Power Research Institute Co Ltd
Current assignee: Huadian Electric Power Research Institute Co Ltd
Priority date: 2015-07-03
Filing date: 2015-07-03
Publication date: 2015-12-02
Anticipated expiration: 2025-07-03

Abstract

The utility model relates to a dog for power plant, the big model valve of specially adapted switch, medium model valve and small -size valve. Still there is not a structural design reasonable now, convenient to use, the commonality is strong, wide applicability's dog. The utility model discloses a trunk pipe, its characteristics are: still include sheath, valvelet door -trip three -jaw structure, branch pipe, two claw structures on the big -and -middle valve switch and no. Two sheaths no. One, the one end of branch pipe is fixed on the trunk pipe, and branch pipe and trunk pipe are perpendicular, and the other end at the branch pipe is fixed to valvelet door -trip three -jaw structure, and a sheath, no. Two claw structures on sheath and the big -and -middle valve switch are all fixed at the trunk pipe, and no. One sheath, the one end of branch pipe, no. Two claw structures on sheath and the big -and -middle valve switch are arranged along the trunk pipe in proper order. The utility model has the advantages of reasonable structure design, convenient to use, the commonality is strong, and the valve that can be applicable to on a plurality of specialties of power plant, multiple model valve, a plurality of position carries out in time, makes things convenient for the switch.

Description

Power station dog

Technical field

The utility model relates to a kind of power station dog, belong to the common tool in power station, the main power plant that is applicable to comprises chemistry, steam turbine, each specialty use of boiler, be specially adapted to switch large model valve, medium model valve and ting model valve, the dog behaviour in service of current power plant can be improved.

Background technique

Dog belongs to the common tool in power station, be mainly used in switch valve, dog conventional in power station at present all adopts two pawl structures substantially, and dog utilizes two pawls to be fixed on valve, utilize torsional interaction in valve trolley same plane, thus realize the object of switch valve.Existing dog is relatively simple for structure, form is more single, and a dog can only the valve of a switch model, and versatility is poor, actual when using a lot of local valve inapplicable and cannot switch valve, therefore power plant can only purchase the dog of large quantities of similar different model.When Unit Commitment, often because dog quantity not or model not to the object that cannot realize switch valve, delay the time, have impact on the start and stop of unit, particularly when accident treatment because dog model is not to cannot Open valve discharge accident working medium or cannot the effective isolated system of throttle down, cause the accident and expand or produce secondary harm.

Also there is no a kind of reasonable in design now, easy to use, highly versatile, widely applicable, the multiple specialty of power plant can be applicable to, be applicable to power plant's Multiple Type valve, the valve be applicable on the multiple position of power plant carries out in time, the dog of Convenient switch.

Model utility content

The purpose of this utility model is to overcome above shortcomings in prior art, and a kind of reasonable in design is provided, easy to use, highly versatile, widely applicable, the multiple specialty of power plant can be applicable to, be applicable to power plant's Multiple Type valve, the valve be applicable on the multiple position of power plant carries out in time, the power station dog of Convenient switch.

The technical scheme in the invention for solving the above technical problem is: this power station dog comprises main pipe, its structural feature is: also comprise a sheath, minor valve switch three-jaw structure, arm, big-and-middle valve switch two pawl structure and No. two sheaths, one end of described arm is fixed on main pipe, this arm is vertical with main pipe, described minor valve switch three-jaw structure is fixed on the other end of arm, a described sheath, No. two sheaths and big-and-middle valve switch two pawl structure are all fixed on main pipe, a described sheath, one end of arm, No. two sheaths and big-and-middle valve switch two pawl structure are arranged in order along main pipe.

As preferably, minor valve switch three-jaw structure described in the utility model comprises fixed base, post, No. two posts and No. three posts, the end face of described fixed base is fixed on the other end of arm, one end of a described post, No. two posts and No. three posts is all fixed on the bottom surface of fixed base, and a described post, No. two posts and No. three posts are all and arms parallel.

As preferably, big-and-middle valve switch two pawl structure described in the utility model comprises a bar and No. two bars, and one end of a described bar and No. two bars is all fixed on main pipe, and this bar is parallel with No. two bars, and a described bar is all vertical with main pipe with No. two bars.

As preferably, a sheath described in the utility model and No. two sheaths are quality of rubber materials.

As preferably, big-and-middle valve switch two pawl structure described in the utility model is positioned at the end position of main pipe.

As preferably, minor valve switch three-jaw structure described in the utility model and big-and-middle valve switch two pawl parallelism structural.

As preferably, a post described in the utility model, No. two posts and No. three posts are all perpendicular to the bottom surface of fixed base, the axes normal of described arm is in the bottom surface of fixed base, the triangle formed between the axis of the axis of a described post and the intersection point of fixed base bottom surface, the axis of No. two posts and the intersection point of fixed base bottom surface and No. three posts and the intersection point of fixed base bottom surface is equilateral triangle, and the axis of described arm is through the center of equilateral triangle.Namely the axis of three pawls minor valve switch three-jaw structure designed and the axis of arm are parallel structure, and the axis of three pawls is through the circle tangent with this three straight lines, and this circle of decile.

As preferably, length, the shape of a post described in the utility model, No. two posts and No. three posts are all equal with size.

As preferably, a bar described in the utility model and No. two bars are all and arms parallel.

As preferably, length, the shape of a bar described in the utility model and No. two bars are all equal with size.

The utility model compared with prior art, have the following advantages and effect: reasonable in design, scientific arrangement, is suitable for ability strong, efficiently solve the skimble-scamble problem of large ting model dog, efficiently solving original dog can not the problem of valve of switch respective location and angle.Add the problem that when sheath solves the outdoor use of each power plant of northern China, dog is freezing cold, improve the hand environment using dog simultaneously.Existing equipment can be reequiped easily, be easy to be extended and applied.

Minor valve construction of switch in the utility model is used for the minor valve of the systems such as switch collection installs to unit water delivery together, discharges water, exhaust, due to collection install to water delivery together, discharge water, the handwheel of the minor valve of the system such as exhaust is in same plane, inside some minor valve other valve place planes recessed, or cause some minor valve switches difficulty due to the stop of other pipelines, or due to some valve switch difficulty of problem of angle.Only minor valve construction of switch vertically need be inserted minor valve, hold two sheaths and rotate dog switch minor valve, owing to adding horizontal arm, the plane changing rotation couple makes the above minor valve being difficult to switch be easy to switch.Large valve switch structure is used for the large valve of switch unit.

At present when power plant purchases the dog of similar quantity, when Unit Commitment, need to arrange everyone dry different work, need to arrange same person to do several work simultaneously, often because dog quantity is inadequate or model is not right, increase staff and come and go the number of times of central station of floating dock and space crossed number of times of running, add the physical consumption of staff, delay the time, have impact on the start and stop of unit.Particularly when accident treatment because dog model is not to cannot Open valve discharge accident working medium or cannot the effective isolated system of throttle down, cause the accident and expand or produce secondary harm.The utility model is applicable to various model valve, adds versatility, solves above problem.

Accompanying drawing explanation

Fig. 1 is the main TV structure schematic diagram of power station dog in the utility model embodiment.

Fig. 2 be Fig. 1 look up structural representation.

Embodiment

Below in conjunction with accompanying drawing, also by embodiment, the utility model is described in further detail, and following examples are that the utility model is not limited to following examples to explanation of the present utility model.

Embodiment.

See Fig. 1 to Fig. 2, power station dog in the present embodiment comprises a sheath 1, minor valve switch three-jaw structure 2, arm 3, big-and-middle valve switch two pawl structure 4, No. two sheaths 5 and main pipe 6, a sheath 1 and No. two sheaths 5 are quality of rubber materials usually, are preferably soft rubber material.

In the present embodiment, one end of arm 3 is fixed on main pipe 6, this arm 3 is vertical with main pipe 6, minor valve switch three-jaw structure 2 is fixed on the other end of arm 3, a sheath 1, No. two sheaths 5 and big-and-middle valve switch two pawl structure 4 are all fixed on main pipe 6, and sheath 1, one end of arm 3, No. two sheaths 5 and a big-and-middle valve switch two pawl structure 4 are arranged in order along main pipe 6.

Minor valve switch three-jaw structure 2 in the present embodiment comprises fixed base, post, No. two posts and No. three posts, the end face of fixed base is fixed on the other end of arm 3, one end of post, No. two posts and No. three posts is all fixed on the bottom surface of fixed base, and a post, No. two posts are all parallel with arm 3 with No. three posts.

A post in the present embodiment, No. two posts and No. three posts are all perpendicular to the bottom surface of fixed base, the axes normal of arm 3 is in the bottom surface of fixed base, the triangle formed between the axis of the axis of a post and the intersection point of fixed base bottom surface, the axis of No. two posts and the intersection point of fixed base bottom surface and No. three posts and the intersection point of fixed base bottom surface is equilateral triangle, and the axis of arm 3 is through the center of equilateral triangle.Length, the shape of post, No. two posts and No. three posts are usually all equal with size.

Big-and-middle valve switch two pawl structure 4 in the present embodiment comprises a bar and No. two bars, and one end of a bar and No. two bars is all fixed on main pipe 6, and this bar is parallel with No. two bars, and a bar is all vertical with main pipe 6 with No. two bars.A bar is all parallel with arm 3 with No. two bars, and length, the shape of a bar and No. two bars are usually all equal with size.

Big-and-middle valve switch two pawl structure 4 in the present embodiment is usually located at the end position of main pipe 6, and minor valve switch three-jaw structure 2 is parallel with big-and-middle valve switch two pawl structure 4.

Power station dog in the present embodiment is on the basis of original dog, and minor valve active force can act on valve handle internal switch minor valve, and large valve function power can act on the large valve of valve external switch, solves large minor valve dog common question.By increase torsional interaction Different Plane solve part minor valve due to position angle cannot the problem of switch.A sheath 1 and No. two sheaths 5 can be designed as the soft rubber sleeve being suitable for human body skin and are loaded on dog, and the problem that when solving the outdoor use of each power plant of northern China, dog is freezing cold, improves the hand environment using dog simultaneously.

In addition, it should be noted that, the specific embodiment described in this specification, the shape, institute's title of being named etc. of its parts and components can be different, and the above content described in this specification is only to the explanation of the utility model structure example.The equivalence change that structure, feature and principle described in all foundation the utility model inventional idea are done or simple change, be included in the protection domain of the utility model patent.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment; only otherwise depart from structure of the present utility model or surmount this scope as defined in the claims, protection domain of the present utility model all should be belonged to.

Claims

1. a power station dog, comprise main pipe (6), it is characterized in that: also comprise a sheath (1), minor valve switch three-jaw structure (2), arm (3), big-and-middle valve switch two pawl structure (4) and No. two sheaths (5), one end of described arm (3) is fixed on main pipe (6), this arm (3) is vertical with main pipe (6), described minor valve switch three-jaw structure (2) is fixed on the other end of arm (3), a described sheath (1), No. two sheaths (5) and big-and-middle valve switch two pawl structure (4) are all fixed on main pipe (6), a described sheath (1), one end of arm (3), No. two sheaths (5) and big-and-middle valve switch two pawl structure (4) are arranged in order along main pipe (6).

2. power station according to claim 1 dog, it is characterized in that: described minor valve switch three-jaw structure (2) comprises fixed base, post, No. two posts and No. three posts, the end face of described fixed base is fixed on the other end of arm (3), one end of a described post, No. two posts and No. three posts is all fixed on the bottom surface of fixed base, and a described post, No. two posts are all parallel with arm (3) with No. three posts.

3. power station according to claim 1 dog, it is characterized in that: described big-and-middle valve switch two pawl structure (4) comprises a bar and No. two bars, one end of a described bar and No. two bars is all fixed on main pipe (6), this bar is parallel with No. two bars, and a described bar and No. two bars are all vertical with main pipe (6).

4. the power station dog according to claim 1 or 2 or 3, is characterized in that: a described sheath (1) and No. two sheaths (5) are quality of rubber materials.

5. the power station dog according to claim 1 or 2 or 3, is characterized in that: described big-and-middle valve switch two pawl structure (4) is positioned at the end position of main pipe (6).

6. the power station dog according to claim 1 or 2 or 3, is characterized in that: described minor valve switch three-jaw structure (2) is parallel with big-and-middle valve switch two pawl structure (4).

7. power station according to claim 2 dog, it is characterized in that: a described post, No. two posts and No. three posts are all perpendicular to the bottom surface of fixed base, the axes normal of described arm (3) is in the bottom surface of fixed base, the triangle formed between the axis of the axis of a described post and the intersection point of fixed base bottom surface, the axis of No. two posts and the intersection point of fixed base bottom surface and No. three posts and the intersection point of fixed base bottom surface is equilateral triangle, and the axis of described arm (3) is through the center of equilateral triangle.

8. power station according to claim 2 dog, is characterized in that: length, the shape of a described post, No. two posts and No. three posts are all equal with size.

9. power station according to claim 3 dog, is characterized in that: a described bar and No. two bars are all parallel with arm (3).

10. power station according to claim 3 dog, is characterized in that: length, the shape of a described bar and No. two bars are all equal with size.