CN203857276U - Overground dewatering valve cabinet for direct burial steam pipeline - Google Patents

Abstract

An overground dewatering valve cabinet for a direct burial steam pipeline is characterized in that a dewatering and starting drain valve bank, forcible exhaust air feeding and exhausting air pipes and control valves are arranged in an overground protection valve cabinet and are connected with a dewatering transfer pipe and each air pipe of dewatering and drain pipe fittings by connection pipes, so the overground dewatering and drain valve cabinet which is conveniently daily maintained and repaired and realizes the dewatering and drain functions is realized without the need of constructing a dewatering room. The overground dewatering valve cabinet for the direct burial steam pipeline has the beneficial effects that the overground dewatering valve cabinet is arranged to replace a dewatering well in engineering, the city appearance attraction demand is not influenced, and no danger factors exist. The overground dewatering valve cabinet has the advantages that the forming structure of a cabinet body and the valve bank is simple, the cost is lower than the material and construction cost of the dewatering well, engineering investment is saved, the pipeline construction progress is accelerated, maintenance is convenient and the like. The overground dewatering valve cabinet has obvious feasibility and practicability. A plurality of standard structures can be derived according to the category and structure of connected dewatering pipe fittings, and the overground dewatering valve cabinet is convenient to manufacture, material-saving and good in compatibility with a construction plan.

Description

A kind of Buried Steam Pipe line land used mo(u)ld top half drain valve cabinet

Technical field

The utility model relates to the preset insulating steam pipe line of direct-burried engineering field, relates in particular to a kind of Buried Steam Pipe line land used mo(u)ld top half drain valve cabinet.

Background technique

At present, common practices hydrophobic, draining for direct-burried prefabricated thermal insulation steam pipe line in engineering is, at hydrophobic point, hydrophobic pipe fitting is installed, the water of condensation fairlead of hydrophobic pipe fitting is connected to the hydrophobic well chamber with two separate units and is connected with drain valve group, the condensate water discharge of drain valve group is introduced the sump unit of hydrophobic well chamber.In starting running, the hydrophobic valve terminal that needs operating personnel to enter into hydrophobic well chamber is manually opened bypass valve, and close hydrophobic branch valve, guarantee that initial start stage water of condensation can be discharged to sump unit by static pressure, after startup heating coil completes, the hydrophobic valve terminal that needs operating personnel again to enter into hydrophobic well chamber is closed bypass valve and is opened hydrophobic branch valve, starts regular hydrophobic function in pipeline performance process.Water of condensation in sump unit needs operating personnel to utilize the regular pump drainage of submersible pump.The shortcomings such as this hydrophobic point builds and the construction investment of the method for operation is large, operation is loaded down with trivial details, manual work workload large, line service amount is large, and often because the problems such as well chamber sealing is defective cause well chamber ponding, valve group seriously corroded, service life of equipment shortens greatly, urgently improves.

Summary of the invention

The purpose of this utility model is to provide a kind of Buried Steam Pipe line land used mo(u)ld top half drain valve cabinet; by hydrophobic and start drain valve group and forced-ventilated send, exhaust duct and control valve are arranged in Protective valve cabinet on the ground; by connecting tube, be connected with hydrophobic fairlead and each airduct of white-out pipe fitting, thereby realize without building hydrophobic well chamber, realize white-out water function and facilitate regular maintenance and the ground mo(u)ld top half white-out water valve cabinet of maintenance.

For achieving the above object, the utility model is realized by the following technical solutions:

A Buried Steam Pipe line land used mo(u)ld top half drain valve cabinet, comprises drain valve group assembly, forced drainage supply and exhaust assembly, cabinet, and described drain valve group assembly comprises hydrophobic bypass valve, shut-off valve, thermodynamic drain valve, hydrophobic fairlead, condensation water drainage pipe; Hydrophobic bypass valve one side is connected with condensation water drainage pipe by connecting tube, and opposite side is connected with hydrophobic fairlead by connecting tube; Thermodynamic drain valve is connected with the pipe of hydrophobic bypass valve both sides by connecting tube;

Described forced drainage supply and exhaust assembly comprises that confession blast connection, one-way valve air-supply control valve, one-way valve exhaust duct, one-way valve gas exhausting valve, forced-ventilated air feed control valve, forced-ventilated supply airduct for airduct, one-way valve; Forced-ventilated for airduct by pipe successively with forced-ventilated air feed control valve, be connected for airduct for blast connection, one-way valve air-supply control valve, one-way valve; One-way valve exhaust duct is connected with one-way valve gas exhausting valve by pipe, and one-way valve gas exhausting valve is connected to square tube place under one-way valve air-supply control valve by pipe;

Described drain valve group assembly, forced drainage supply and exhaust assembly and cabinet are by being welded and fixed;

Outer pillar is arranged on hydrophobic fairlead, forced-ventilated for airduct, one-way valve for airduct outside, and surface arranges anticorrosion protective coating.

Described anticorrosion protective coating material is polyureas.

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

The utility model can be connected with non-maintaining direct-burried prefabricated thermal insulation pressure reduction white-out pipe fitting, upper hydrophobic pipe fitting common realization and start operation draining and the hydrophobic function of water of condensation in service.Ground mo(u)ld top half drain valve cabinet is set and can substitutes the hydrophobic well in engineering, meanwhile, do not affect appearance of the city requirement attractive in appearance, without hazards.Cabinet and valve group form simple in structure, and cost, lower than material and construction cost that hydrophobic well chamber is set, can be saved project investment, accelerate pipeline construction progress, and the advantages such as convenient for maintaining, have obvious feasibility and practicability.According to the category of connected hydrophobic pipe fitting and structure, can derive several normal structures, convenient making, saves material, arranges degree of adaptability good with construction.

Accompanying drawing explanation

Fig. 1 is structural drawing of the present utility model.

Fig. 2 is pressure reduction white-out pipe fitting and ground mo(u)ld top half drain valve cabinet connection diagram.

The hydrophobic fairlead 4-of the hydrophobic bypass valve 3-of 1-condensation water drainage pipe 2-forced-ventilated supplies the hydrophobic fairlead 17-of blast connection 15-pressure reduction white-out pipe fitting 16-pressure reduction white-out pipe fitting pressure reduction white-out pipe fitting forced drainage ajutage 18-pressure reduction white-out pipe fitting one-way valve 19-shut-off valve for airduct 5-one-way valve for the outer anticorrosion protective coating 8-of the pillar 7-cabinet 9-thermodynamic drain valve 10-forced-ventilated air feed control valve 11-one-way valve gas exhausting valve 12-one-way valve air-supply of airduct 6-control valve 13-one-way valve exhaust duct 14-

Embodiment

Below in conjunction with accompanying drawing, embodiment of the present utility model is further illustrated:

As shown in Figure 1, a kind of Buried Steam Pipe line land used mo(u)ld top half drain valve cabinet, by drain valve group assembly, forced drainage supply and exhaust assembly, cabinet 8, formed, described drain valve group assembly comprises hydrophobic bypass valve 2, shut-off valve 19, thermodynamic drain valve 9, hydrophobic fairlead 3, condensation water drainage pipe 1, by condensation water drainage pipe 1, water of condensation is drawn out to the position that is applicable to discharge; Hydrophobic bypass valve 2 one sides are connected with condensation water drainage pipe 1 by connecting tube, and opposite side is connected with hydrophobic fairlead 3 by connecting tube; Thermodynamic drain valve 9 is connected with the pipe of hydrophobic bypass valve 2 both sides by connecting tube;

Described forced drainage supply and exhaust assembly comprises that confession blast connection 14, one-way valve air-supply control valve 12, one-way valve exhaust duct 13, one-way valve gas exhausting valve 11, forced-ventilated air feed control valve 10, forced-ventilated supply airduct 5 for airduct 4, one-way valve; Forced-ventilated for airduct 4 by pipeline successively with forced-ventilated air feed control valve 10, be connected for airduct 5 for blast connection 14, one-way valve air-supply control valve 12, one-way valve; One-way valve exhaust duct 13 is connected with one-way valve gas exhausting valve 11 by pipe, and one-way valve gas exhausting valve 11 is connected to one-way valve air-supply 12 times square tube places of control valve by pipe;

Described drain valve group assembly, forced drainage supply and exhaust assembly and cabinet 8 are by being welded and fixed;

Described outer pillar 6 is arranged on hydrophobic fairlead 3, forced-ventilated for airduct 4, one-way valve for airduct 5 outsides, and surface arranges anticorrosion protective coating 7.

Described anticorrosion protective coating 7 materials are polyureas.

As shown in Figure 2, the hydrophobic fairlead 3 of drain valve cabinet, forced-ventilated are connected with the hydrophobic fairlead 16 of pressure reduction white-out pipe fitting, pressure reduction white-out pipe fitting forced drainage ajutage 17, pressure reduction white-out pipe fitting one-way valve ajutage 18 by pipeline respectively for airduct 5 for airduct 4, one-way valve, realize without building hydrophobic well chamber and realize white-out water function and facilitate regular maintenance and the ground mo(u)ld top half white-out water valve cabinet of maintenance.

Utilize forced-ventilated for airduct 4 and corresponding control valve, by being connected with pressure reduction white-out pipe fitting, realize the function that steam tube initial operation phase forces to discharge water of condensation.

When not needing the service condition of forced drainage function for being connected with upper hydrophobic pipe fitting, can, to further simplification of the present utility model, remove forced drainage supply and exhaust assembly.

The utility model is to be arranged in Protective valve cabinet on the ground with startup drain valve group and forced-ventilated confession, exhaust duct and control valve hydrophobic; by connecting tube, be connected with hydrophobic fairlead and each airduct of white-out pipe fitting, thereby realize without building hydrophobic well chamber, realize white-out water function and facilitate regular maintenance and the ground mo(u)ld top half white-out water valve cabinet of maintenance.

As further improvement of the utility model, drain valve cabinet can need and adopts various, high with environment matching degree profile and material according to mounting point and environmental design.

Each connecting tube interface position of the utility model product should be corresponding with each connecting tube position of the pipe fitting that is connected, Convenient interface.As requirement of engineering, can interconnecting by suitable transfer tube realization and pipe fitting.

As required cabinet carried out unified surface treatment and applies anti-corrosive protective material polyureas, completing the entirely making of mo(u)ld top half drain valve cabinet.

Cabinet provides the fixing and protective function of each valve group and connecting tube, meanwhile, provides the interface of drawing of each pipeline.

Claims (2)

1. a Buried Steam Pipe line land used mo(u)ld top half drain valve cabinet, comprise drain valve group assembly, forced drainage supply and exhaust assembly, cabinet, it is characterized in that, described drain valve group assembly comprises hydrophobic bypass valve, shut-off valve, thermodynamic drain valve, hydrophobic fairlead, condensation water drainage pipe; Hydrophobic bypass valve one side is connected with condensation water drainage pipe by connecting tube, and opposite side is connected with hydrophobic fairlead by connecting tube; Thermodynamic drain valve is connected with the pipe of hydrophobic bypass valve both sides by connecting tube;

Described forced drainage supply and exhaust assembly comprises that confession blast connection, one-way valve air-supply control valve, one-way valve exhaust duct, one-way valve gas exhausting valve, forced-ventilated air feed control valve, forced-ventilated supply airduct for airduct, one-way valve; Forced-ventilated for airduct by pipe successively with forced-ventilated air feed control valve, be connected for airduct for blast connection, one-way valve air-supply control valve, one-way valve; One-way valve exhaust duct is connected with one-way valve gas exhausting valve by pipe, and one-way valve gas exhausting valve is connected to square tube place under one-way valve air-supply control valve by pipe;

Described drain valve group assembly, forced drainage supply and exhaust assembly and cabinet are by being welded and fixed;

Outer pillar is arranged on hydrophobic fairlead, forced-ventilated for airduct, one-way valve for airduct outside, and surface arranges anticorrosion protective coating.

2. a kind of Buried Steam Pipe line land used mo(u)ld top half drain valve cabinet according to claim 1, is characterized in that, described anticorrosion protective coating material is polyureas.