CN206112896U - Boiler ration drainage - Google Patents

Abstract

The utility model relates to a boiler ration drainage, including feed liquor pipeline, drain line and the different quantitative waste fitting discharging of a plurality of blowdown flow rates, a plurality of quantitative waste fitting discharging are parallelly connected, a plurality of quantitative waste fitting discharging's feed liquor end all with the exit linkage of feed liquor pipeline, the access connection with drain line is held all to a plurality of quantitative waste fitting discharging's play liquid. Can select to open the different quantitative waste fitting discharging volume of coming control blow down of blowdown flow rate, easy operation, quick at the during operation.

Description

A kind of quantitative drainage of boiler

Technical field

This utility model is related to boiler heat-transfer and heat-exchange system technical field, specifically refers to a kind of quantitative blowdown system of boiler System.

Background technology

Because Industrial Boiler day-to-day operation operating mode is complicated, Load Regulation is frequent, so the safety in order to ensure unit operation Property and high efficiency, it is necessary to which the water quality conformance with standard for making pot water is required.In order that the impurity in boiler working substance maintains certain limit Within degree, Natural Circulation dum boiler must constantly carry out blowdown, discharge the water of the higher pot water of salinity, basicity and deposition The deposits such as slag, sludge.Continuous blowdown not only has a great impact to the make-up water percentage of unit, while can also affect the economy of unit Property has a huge impact.But, in current Industrial Boiler day-to-day operation, the Flow-rate adjustment of continuous blowdown becomes boiler operatiopn The difficult point of regulation.

Utility model content

Technical problem to be solved in the utility model be to provide one kind can accurately and timely regulating industrial boiler it is continuous The quantitative drainage of blowdown flow rate.

The technical scheme that this utility model solves above-mentioned technical problem is as follows：The quantitative drainage of a kind of boiler, including entering Liquid pipeline, the drain line quantitative blowdown apparatus different with multiple blowdown flow rates, multiple quantitative blowdown apparatus are in parallel, Duo Gesuo The liquid feeding end for stating quantitative blowdown apparatus is connected with the outlet of the water influent pipeline, the liquid outlet of multiple quantitative blowdown apparatus It is connected with the import of the drain line.

The beneficial effects of the utility model are：The quantitative blowdown apparatus that can operationally select opening blowdown flow rate different come Control of sewage disposal amount, it is simple to operate, quick.

On the basis of above-mentioned technical proposal, this utility model can also do following improvement.

Further, each described quantitative blowdown apparatus includes first flange, second flange and orifice plate, multiple described quantitative The sectional area of the through hole on the orifice plate in blowdown apparatus is differed；The orifice plate be arranged on the first flange with it is described Between second flange；The orifice plate is clamped after the first flange is fixedly connected with the second flange；First method Orchid is connected with the outlet of water influent pipeline, and the second flange is connected with the import of drain line.

It is can be derived according to the flowing principle of continuity and Bernoulli equation using the beneficial effect of above-mentioned further scheme The relation that goes out between differential pressure and flow and try to achieve flow, its fundamental formular is as follows：

Wherein, C- efflux coefficients (dimensionless), the orifice diameter of throttling element under d- working condition, D- working condition Lower upstream line internal diameter, qv- volume flows t/h, β-diameter is than d/D (dimensionless)；Density Kg/m of ρ-fluid.So, In the case of volume flow or mass flow are known, the internal diameter of the orifice flowmeter that can retrodict.The design of this device is exactly From this angle, with actual continuous blowdown system of boiler device parameter as condition, in the case of having calculated rated load, each hole Aperture corresponding to plate, by the difference in aperture on different orifice plates, realizes the different blowdown flow rate of control.

Further, multiple through holes are set on the orifice plate, area per the through hole on orifice plate described in block and for S1, each two S1 is differed.

Further, also including upstream pressure table, the upstream pressure table is arranged in the first flange.

Further, also including downstream pressure table, the downstream pressure table is arranged in the second flange.

Further, also including multiple upstream cut-off valves, the liquid feeding end of each quantitative blowdown apparatus and one it is described on Trip stop valve Single port, the upstream cut-off valve another port is connected with the water influent pipeline.

Further, also including multiple downstream cut-off valves, the liquid outlet of each quantitative blowdown apparatus with described in one Downstream cut-off valve a port, another port of the downstream cut-off valve is connected with the drain line.

Further, also including flash chamber, the outlet of the drain line connects the flash chamber.

Further, also including sewage globe valve, the sewage globe valve is in parallel with multiple quantitative blowdown apparatus, wherein A port connects the water influent pipeline, and another port connects the drain line.

Description of the drawings

Fig. 1 is a kind of structural representation of the quantitative drainage of boiler of this utility model；

Fig. 2 is the quantitative blowdown apparatus structural representation in a kind of quantitative drainage of boiler of this utility model.

In accompanying drawing, the list of parts representated by each label is as follows：

1st, water influent pipeline, 2, drain line, 3, quantitative blowdown apparatus, 4, first flange, 5, second flange, 6, orifice plate, 7, Sewage globe valve, 8, upstream cut-off valve, 9, downstream cut-off valve, 10 drain outlets, 11, Measurement channel.

Specific embodiment

Principle of the present utility model and feature are described below in conjunction with accompanying drawing, example is served only for explaining this practicality It is new, it is not intended to limit scope of the present utility model.

As depicted in figs. 1 and 2, the quantitative drainage of a kind of boiler, including water influent pipeline 1 and drain line 2, at both Between and the different quantitative blowdown apparatus 3 of quinque blowdown flow rate, the liquid feeding end of five quantitative blowdown apparatus 3 with water influent pipeline 1 Outlet connection, the liquid outlet of five quantitative blowdown apparatus 3 is connected with the import of drain line 2；The outlet connection of drain line 2 Flash chamber.

Select in the present embodiment and be provided with five different quantitative blowdown apparatus 3 of blowdown flow rate；Arrange two, six or Ten etc., arrange and mounting means is identical with the setting five in the present embodiment.

As shown in Fig. 2 each quantitative blowdown apparatus 3 includes first flange 4, second flange 5 and orifice plate 6；Along the first method The center line axis direction of orchid 4 and second flange 5 is provided with drain outlet 10；Arrange multiple (more than or equal to two in first flange 4 It is individual) bolt hole, bolt hole corresponding with quantity in first flange 4, position is provided with second flange 5, bolt passes through the first method Bolt hole on orchid 4 and second flange 5 connects first flange 4 and second flange 5.Orifice plate 6 is clipped in the method for first flange 4 and second Between blue 5, and make the position of the through hole of orifice plate 6 corresponding with drain outlet 10.

The sectional area of the through hole on orifice plate 6 in five quantitative blowdown apparatus 3 is differed, to realize different blowdowns Amount.

Multiple through holes can be set on every piece of orifice plate 6, the area of the through hole on every piece of orifice plate 6 and for S1, each two S1 Differ.

For the ease of controlling and opening quantitative blowdown apparatus 3, it is respectively connected with the liquid feeding end of each quantitative blowdown apparatus 3 Trip stop valve 8, liquid outlet is respectively connected with downstream cut-off valve 9.By opening and closing upstream cut-off valve 8 and downstream cut-off valve 9, come The opening and closing of the corresponding quantitative blowdown apparatus 3 of control.

For the pressure in real-time monitoring drain outlet 10, in order to controlling and adjusting the pressure in drain outlet 10, The side of first flange 4 arranges a Measurement channel 11, and one end of pipeline connects with Measurement channel 11, and the other end connects upstream pressure Power table；A Measurement channel 11 is set in the side of second flange 5, one end of pipeline connects with Measurement channel 11, other end connection One downstream pressure gauge.

In order to when quantitative blowdown apparatus 3 are closed and keeped in repair, additionally it is possible to continue blowdown, be also provided with sewage globe valve 7, and with Many five quantitative blowdown apparatus 3 are in parallel, a port of sewage globe valve 7 connection feed tube 1 tunnel, another port connected drainage pipeline 2。

In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " horizontal ", " length ", " width Degree ", " thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward ", " suitable The orientation or position relationship of the instruction such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " is based on orientation shown in the drawings Or position relationship, be for only for ease of description this utility model and simplify description, rather than indicate or imply indication device or Element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to limit of the present utility model System.

Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or Implicitly include at least one this feature.In description of the present utility model, " multiple " are meant that at least two, such as two It is individual, three etc., unless otherwise expressly limited specifically.

In this utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu It is fixed " etc. term should be interpreted broadly, it is for example, it may be fixedly connected, or be detachably connected or integral；Can be It is mechanically connected, or electrically connects；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two The connection of element internal or the interaction relationship of two elements, unless otherwise clearly restriction.For the common skill of this area For art personnel, concrete meaning of the above-mentioned term in this utility model can be as the case may be understood.

In this utility model, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score Can be the first and second feature directly contacts, or the first and second features are by intermediary mediate contact.And, first is special Levy second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only Represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be with Be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height less than second feature.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described Point is contained at least one embodiment of the present utility model or example.In this manual, to the schematic table of above-mentioned term State and be necessarily directed to identical embodiment or example.And, the specific features of description, structure, material or feature can be with Combine in an appropriate manner in any one or more embodiments or example.Additionally, in the case of not conflicting, this area Technical staff the feature of the different embodiments or example described in this specification and different embodiment or example can be entered Row is combined and combined.

Although embodiment of the present utility model has been shown and described above, it is to be understood that above-described embodiment is Exemplary, it is impossible to it is interpreted as to restriction of the present utility model, one of ordinary skill in the art is in scope of the present utility model It is interior above-described embodiment to be changed, be changed, being replaced and modification.

Claims (9)

1. the quantitative drainage of a kind of boiler, it is characterised in that including water influent pipeline (1), drain line (2) and multiple blowdown flow rates Different quantitative blowdown apparatus (3), multiple quantitative blowdown apparatus (3) are in parallel, and multiple quantitative blowdown apparatus (3) are entered Liquid end is connected with the outlet of the water influent pipeline (1), the liquid outlet of multiple quantitative blowdown apparatus (3) with the discharge opeing The import connection of pipeline (2).

2. a kind of quantitative drainage of boiler according to claim 1, it is characterised in that each described quantitative blowdown apparatus (3) first flange (4), second flange (5) and orifice plate (6), the orifice plate in multiple quantitative blowdown apparatus (3) are included (6) sectional area of the through hole on is differed；The orifice plate (6) is arranged on the first flange (4) with the second flange (5) Between；The orifice plate (6) is clamped after the first flange (4) is fixedly connected with the second flange (5)；First method Blue (4) are connected with the outlet of water influent pipeline (1), and the second flange (5) is connected with the import of drain line (2).

3. the quantitative drainage of a kind of boiler according to claim 2, it is characterised in that arrange multiple on the orifice plate (6) Through hole, area per the through hole on orifice plate described in block (6) and for S1, each two S1 is differed.

4. the quantitative drainage of a kind of boiler according to claim 2, it is characterised in that described also including upstream pressure table Upstream pressure table is arranged in the first flange (4).

5. the quantitative drainage of a kind of boiler according to claim 2, it is characterised in that described also including downstream pressure table Downstream pressure table is arranged in the second flange (5).

6. the quantitative drainage of a kind of boiler according to claim 1, it is characterised in that also including multiple upstream cut-off valves (8), the liquid feeding end of each quantitative blowdown apparatus (3) and upstream cut-off valve (8) Single port, the upstream cut-off Valve (8) another port is connected with the water influent pipeline (1).

7. the quantitative drainage of a kind of boiler according to claim 1, it is characterised in that also including multiple downstream cut-off valves (9), the liquid outlet of each quantitative blowdown apparatus (3) with downstream cut-off valve (9) a port, the downstream Another port of stop valve (9) is connected with the drain line (2).

8. the quantitative drainage of a kind of boiler according to claim 1, it is characterised in that also including flash chamber, the discharge opeing The outlet of pipeline (2) connects the flash chamber.

9. according to the quantitative drainage of a kind of boiler described in claim 1, it is characterised in that described also including sewage globe valve (7) Sewage globe valve (7) is in parallel with multiple quantitative blowdown apparatus (3), and one of port connects the water influent pipeline (1), separately A port connects the drain line (2).