CN205689992U - A kind of blind plate device being applicable to block pipeline with pressure mouth - Google Patents

Abstract

The utility model discloses a kind of blind plate device being applicable to block pipeline with pressure mouth, it is the plectane that the pipeline flange with closure matches including main body, the inside of described plectane is respectively arranged with endoporus, aperture, described endoporus runs through setting along the radial direction of plectane is left and right, and the diameter of this endoporus is less than circle plate thickness；Described aperture is arranged along the axial direction of plectane, and on the opening-like end face being placed in plectane of the one end of this aperture, its other end is connected with endoporus；Described endoporus Single port connects Pressure gauge by detection connecting leg, and another port connects relief valve by pressure release connecting leg.A kind of blind plate device being applicable to block pipeline with pressure mouth of the present utility model, after blind plate blocks, can be by the pressure inside Pressure gauge detection blind plate, and the medium in pipeline can be released by another with the connecting leg communicated inside blind plate, when pressure in pipeline reaches safe, dismantle blind plate again, it is to avoid band press operation, it is ensured that the safety of use.

Description

A kind of blind plate device being applicable to block pipeline with pressure mouth

Technical field

This utility model relates to the maintenance construction field of pipe-line equipment facility, specifically one and is applicable to block pipeline with pressure The blind plate device of mouth.

Background technology

The canonical name of blind plate (blind disk) is blind flange, is the common components for blocking pipe mouth, and it can Play the isolation the same with end socket, pipe cap and welding plug, cutting function.But blind plate be a kind of can the closure part of repeated disassembled and assembled Part, and the closure of end socket etc. the most no longer prepares to open.At petroleum chemical industry, blind plate is must as pipeline isolation parts Few, such as when equipment overhauls, after valve closing, it is necessary to use the pipeline end that the absolute xegregating unit of blind plate is drawn Mouthful, or use blind plate definitely to isolate upstream and downstream pipeline.Owing to blind plate sealing performance is good, for needing completely isolated system, Blind plate typically must be installed as reliable isolating means.

From the appearance, blind plate of the prior art is generally divided into board-like flat board blind plate, 8 word blind plates, plate gasket ring etc..Plate Formula flat board blind plate, it is simply that the solid plectane of a band handle；8 word blind plates, shape is blind plate just as " 8 " word, one end, and the other end is Restrictor ring.

When the line ports using existing blind plate xegregating unit to draw or isolation upstream and downstream pipeline, the valve of upstream and downstream Door there may be situation about being not closed completely, and may have a small amount of dielectric leakage, after installing blind plate additional, and pipeline between blind plate and valve Pressure will accumulate as time went on, reaches pipeline inner pressure.When removing blind plate, be equivalent to band press operation, exist greatly Security risk.But existing blind plate cannot detect the pressure in the pipeline of closure, also cannot be to its pressure release, it is impossible to ensure dismounting Safety.

Utility model content

Technical problem to be solved in the utility model is to provide a kind of simple in construction, the closure that is applicable to of operation safety carries The blind plate device at pressure pipe road junction.

In order to achieve the above object, this utility model adopts the technical scheme that:

A kind of blind plate device being applicable to block pipeline with pressure mouth, is that the pipeline flange with closure matches including main body Plectane, the inside of described plectane is respectively arranged with endoporus, aperture, and described endoporus runs through setting along the radial direction of plectane is left and right, The diameter of this endoporus is less than circle plate thickness；Described aperture is arranged along the axial direction of plectane, and the one end of this aperture is opening-like Being placed on the end face of plectane, its other end is connected with endoporus；Described endoporus Single port connects Pressure gauge by detection connecting leg, Another port connects relief valve by pressure release connecting leg.

Above-mentioned a kind of be applicable to the blind plate device of closure pipeline with pressure mouth, arrange inside plectane owing to have employed There is endoporus, and be connected to Pressure gauge, relief valve at endoporus two ends, when carrying out removing blind plate, be possible to prevent pipeline with pressure, Thus ensure that safe disassembling section.

As a kind of a kind of improvement being applicable to block the blind plate device of pipeline with pressure mouth of this utility model, described endoporus is straight Footpath, less than the 1/2 of circle plate thickness, had the most both met the requirement measuring pressure, and had reached to judge whether blind plate gap exists pressure energy, Can release pressure simultaneously, can ensure that again blind plate intensity.

Endoporus described above is corresponded respectively to hole wall and the end face of plectane, the bottom surface in the end face of plectane, direction, bottom surface Between minimum range more than 3mm, in actual production process, the pipeline blind variable thickness sample of different-diameter, can be according to mark The blind plate thickness that accurate conventional blind plate thickness is corresponding with pressure rating makees corresponding adjustment.

As a kind of a kind of improvement being applicable to block the blind plate device of pipeline with pressure mouth of this utility model, described endoporus The centrage centrage axial with plectane intersects, and the centrage of endoporus and the axial line of plectane intersect, and can make relief valve and Pressure gauge It is all placed in the distalmost end of blind plate, it is simple to blind plate is installed and operation, meanwhile, is possible to prevent impurity blocking impulse point in system.

As a kind of a kind of improvement being applicable to block the blind plate device of pipeline with pressure mouth of this utility model, described endoporus Two-port uses to seal with detection connected mode between connecting leg, pressure release connecting leg respectively and welds, and uses this connected mode both to have Having firm, the advantage of good seal performance of connection, possess again stronger corrosion resistance, can meet medium is the non-aggressives such as Oil, Water, Gas Or corrosive industrial requirements.

In such scheme, also including that described detection connecting leg is also associated with manually detecting valve, this manually detects valve and is positioned at Between port and the Pressure gauge of endoporus correspondence side, in the case of there is pressure in pipeline, can be according to manometric display number According to carrying out dismounting blind plate manual operation, operate the most flexible, there is certain controllability, operational risk is greatly reduced.

Compared with prior art, the beneficial effects of the utility model are:

1) a kind of blind plate device being applicable to block pipeline with pressure mouth of the present utility model, after blind plate blocks, even if on The valve seal of trip the most sternly has leakage, and in the pipeline between blind plate and valve, the medium of accumulation reaches certain pressure, can be by pressing Pressure inside power table detection blind plate, and the medium in pipeline can be released by another with the connecting leg communicated inside blind plate, wait to manage When pressure in road reaches safe, then dismantle blind plate, it is to avoid band press operation, it is ensured that the safety of use；

2) a kind of being applicable to of the present utility model blocks the installation and removal operation of the blind plate device of pipeline with pressure mouth with often Rule blind plate is identical, and it is simpler, convenient to use；

3) a kind of blind plate device simple in construction being applicable to block pipeline with pressure mouth of the present utility model, it is easy to processing system Make.

Accompanying drawing explanation

Fig. 1 is a kind of blind plate device being applicable to block pipeline with pressure mouth of this utility model；

Fig. 2 be in Fig. 1 A-A to cross-sectional schematic.

Figure is numbered: 1, plectane；2, Pressure gauge；3, detection valve；4, detection connecting leg；5, endoporus；6, aperture；7, pressure release is even Pipe；8, relief valve.

Detailed description of the invention

Below in conjunction with embodiment, the utility model is described in further detail, but this utility model is not limited to these enforcement Example.

From Fig. 1 and Fig. 2, of the present utility model a kind of be applicable to block pipeline with pressure mouth blind plate device by main body be The plectane 1 that matches with the pipeline flange of closure, it is arranged at endoporus plectane 1 within 5 and aperture 6, is connected to endoporus 5 one end Relief valve 8 and be connected to manually detection valve 3 and the Pressure gauge 2 of endoporus 5 other end and constitute.Wherein, described endoporus 5 is along plectane 1 Radial direction left and right run through setting, in present embodiment, the centrage phase that the centrage of described endoporus 5 is axial with plectane 1 Hand over so that endoporus 5 is in left and right horizontally set in the geometric center of plectane 1；Described aperture 6 sets along the axial direction of plectane 1 Putting, on the opening-like end face being placed in plectane 1 of the one end of this aperture 6, its other end is connected with endoporus 5, in this enforcement In mode, aperture 6 is upper and lower be vertically arranged at plectane 1 central axial on, the opening of its upper end is placed in plectane 1 end face In the heart, the port of its lower end extends on endoporus 5 and coupled logical；As further limiting, the diameter of aperture 6 is less than interior The diameter in hole 5, more convenient Pressure gauge, the installation of relief valve.

In FIG, relief valve 8 is sealedly attached on the left side port of endoporus 5 by pressure release connecting leg 7, and Pressure gauge 2 is with manual Detection valve 3 is turned left the right side port being sealedly attached to endoporus 5 successively by detection connecting leg 4 from the right side, described pressure release connecting leg 7 and inspection Surveying connecting leg 4 all uses the mode sealing welding to be attached, thus possesses and have better seal and more preferable anti-corrosive properties.The most just Being to say, the connected mode possessing good sealing and anti-corrosive properties can also use according to demand, is not limited in using weldering Connect a kind of mode of sealing.

Described endoporus 5 diameter is less than the 1/2 of plectane 1 thickness, and as further preferred version, described endoporus 5 is the most right Minimum range between the end face of plectane 1, the hole wall in direction, bottom surface and the end face of plectane 2, bottom surface should be more than 3mm, it is ensured that make Use intensity.

A kind of blind plate device work process being applicable to block pipeline with pressure mouth of the present utility model, is needing setting of maintenance Standby upper, successively through close medium upstream and downstream hands valve, open carry out after relief valve carries out pressure release, pressure release nitrogen (or steam) purging and Purge qualified after at medium upstream and downstream valve, install blind plate device of the present utility model additional.

Remove blind plate device after maintenance, open Pressure gauge 2 and confirm whether to exist between plectane 1 and valve pressure energy, There is following two situation:

If. do not exist pressure can (or for can pressure energy in safe operating range), directly dismounting blind plate；

If. there is pressure energy (the pressure energy being in dangerous opereating specification), can be let out by relief valve 8 Pressure, removes blind plate after unsnatching pressure.

Certainly, the most simply combine accompanying drawing this utility model preferred embodiment to be described in detail, not Limiting practical range of the present utility model with this, all equivalences made according to principle of the present utility model, structure and structure change, All should be covered by protection domain of the present utility model.

Claims (6)

1. it is applicable to block a blind plate device for pipeline with pressure mouth, is the circle that the pipeline flange with closure matches including main body Plate (1), it is characterised in that:

The inside of described plectane (1) is respectively arranged with endoporus (5), aperture (6), and described endoporus (5) is along the radial direction of plectane (1) Left and right running through setting, the diameter of this endoporus (5) is less than plectane (1) thickness；Described aperture (6) sets along the axial direction of plectane (1) Putting, on the opening-like end face being placed in plectane (1) of one end of this aperture (6), its other end is connected with endoporus (5)；

Described endoporus (5) Single port connects Pressure gauge (2) by detection connecting leg (4), and another port is connected by pressure release connecting leg (7) Relief valve (8).

A kind of blind plate device being applicable to block pipeline with pressure mouth the most according to claim 1, it is characterised in that: in described Hole (5) diameter is less than the 1/2 of plectane (1) thickness.

A kind of blind plate device being applicable to block pipeline with pressure mouth the most according to claim 2, it is characterised in that: in described Hole (5) corresponds respectively to the minimum range between the end face of plectane (1), the hole wall in direction, bottom surface and the end face of plectane (1), bottom surface More than 3mm.

A kind of blind plate device being applicable to block pipeline with pressure mouth the most according to claim 1, it is characterised in that: in described The centrage in hole (5) centrage axial with plectane (1) intersects.

A kind of blind plate device being applicable to block pipeline with pressure mouth the most according to claim 1, it is characterised in that: in described The two-port in hole (5) uses to seal with the connected mode between detection connecting leg (4), pressure release connecting leg (7) respectively and welds.

6. according to a kind of blind plate device being applicable to block pipeline with pressure mouth described in Claims 1 to 5 any one, its feature Being: described detection connecting leg (4) is also associated with manually detecting valve (3), this manually detects valve (3) and is positioned at endoporus (5) correspondence Between the port of side and Pressure gauge (2).