CN103353043B

CN103353043B - Heat supply pipeline drain valve anti-icer

Info

Publication number: CN103353043B
Application number: CN201310314918.9A
Authority: CN
Inventors: 杨益明; 谌喜华; 李志虎; 李鸿亮; 王国龙; 马智民; 曹月芹
Original assignee: China Coal No 5 Construction Co Ltd
Current assignee: China Coal No 5 Construction Co Ltd
Priority date: 2013-07-24
Filing date: 2013-07-24
Publication date: 2015-11-25
Anticipated expiration: 2033-07-24
Also published as: CN103353043A

Abstract

The invention discloses a kind of heat supply pipeline drain valve anti-icer, belong to heat supply pipeline technical field.This device is used for the construction of outdoor heating network, comprise and be positioned at water pipe local low point and the drain pipe a communicated with water pipe, be positioned at return pipe local low point and the drain pipe b communicated with return pipe, be communicated with the connecting hose of drain pipe a and drain pipe b, between described connecting hose and drain pipe a, be provided with drain valve A, between connecting hose and drain pipe b, be provided with drain valve B.During use, open drain valve a and drain valve b(drain valve a leaves larger than drain valve b simultaneously), make current slowly flow to water return pipeline by drain valve, connecting hose from water supply line, thus reach the object preventing heat supply pipeline drain valve freezing.The invention solves the problem that traditional heat supply pipeline drain valve is often damaged by frost, reduce maintenance cost, cut operating costs, improve the reliability of heating system.

Description

Heat supply pipeline drain valve anti-icer

Technical field

The present invention relates to heat supply pipeline technical field, is a kind of heat supply pipeline drain valve anti-icer.For the prevention of the frost heaving failure of heat supply pipeline drain valve under outdoor cold climate conditions.

Background technique

Conventional construction method: directly at heat supply pipeline local low point welding drain pipe, drain pipe and drain valve Flange joint, drain pipe simply does some Insulations.There is following drawback in said method:

1, the water in drain pipe and emptying valve is vertical with the water (flow) direction of heat supply pipeline, water in drain pipe and emptying valve and the circulation hardly in heat supply pipeline, the water in drain pipe and emptying valve is caused almost to become " stagnant water ", drain pipe gets over upper position, " stagnant water " phenomenon is more serious, and valve is in the most serious position of stagnant water phenomenon, is also the faintest position of heat supply pipeline heat affecting, in the motivation that cold is very long, be easy to frost heaving failure.

2, emptying valve complex structure, implements insulation difficulty, is the weak spot of insulation.Under normal circumstances, the Insulation at valve place does not all have good heat insulation effect, easily makes emptying valve frost heaving failure.Experience in the past, drain valve can only use one usually for heat cycle, the examination water stage before the next heat supply phase arrives, and can find that most emptying valves exists water leakage phenomenon in various degree, be exactly that valve is in the winter time by the clear proof of frost heaving failure.

Summary of the invention

For practical problem existing in above-mentioned, the invention provides a kind of heat supply pipeline drain valve anti-icer, it can improve emptying valve working life, reduces maintenance on heating systems cost, improves the reliability of heating system.

The present invention realizes with following technological scheme: a kind of heat supply pipeline drain valve anti-icer, comprise and be positioned at water pipe local low point and the drain pipe a communicated with water pipe, be positioned at return pipe local low point and the drain pipe b communicated with return pipe, drain pipe a is greater than drain pipe a with drain pipe b by length and is connected with the connecting hose of the spacing of drain pipe b, between described connecting hose and drain pipe a, be provided with drain valve A, between connecting hose and drain pipe b, be provided with drain valve B.

It is further: described connecting hose is the metal connecting hoses of two ends with Steel Sleeve.

In one end of described drain pipe a, one end of drain pipe b, the two ends of connecting hose are welded with flange, and drain valve A is connected by flange with drain valve B.

Described drain pipe a is fixed on water pipe with welding manner, and drain pipe b is fixed on return pipe with welding manner.

During use, open drain valve a and drain valve b(drain valve a leaves larger than drain valve b simultaneously), make current slowly flow to water return pipeline by drain valve, connecting hose from water supply line, thus reach prevent heat supply pipeline drain valve freezing object.

The invention has the beneficial effects as follows: both met heat supply pipeline and sluiced needs (when needing to sluice, emptying valve is all tightened, unload connecting hose can sluice) solve again the frequent repair and replacement of traditional drain valve, waste time and energy, and in system operation the defect of the large poor effect of maintenance difficulty.Compare with traditional " unshielded " emptying valve method of construction, there is the life-span extending emptying valve, save maintenance cost, cut operating costs, improve the feature of the reliability of heating system.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention;

In figure: 1, drain pipe a; 2, drain pipe b; 3, drain valve A; 4, drain valve B; 5, connecting hose; 6, flange; 7, water pipe; 8, return pipe.

Embodiment

Be below a specific embodiment of the present invention, and be described further by reference to the accompanying drawings.

As shown in Figure 1, heat supply pipeline drain valve anti-icer comprises and is welded in water pipe 7 local low point and the drain pipe a1 communicated with water pipe 7, be welded in return pipe 8 local low point and the drain pipe b2 communicated with return pipe 8, when execution conditions allow, drain pipe a1 and drain pipe b2 is more short better.Drain pipe a1 is greater than drain pipe a1 with drain pipe b2 by length and is communicated with the connecting hose 5 of the spacing of drain pipe b2, and this connecting hose 5 is two ends metal connecting hoses with Steel Sleeve.Between described connecting hose 5 and drain pipe a1, be provided with drain valve A3, between connecting hose 5 and drain pipe b2, be provided with drain valve B4.

In one end of drain pipe a1, one end of drain pipe b2, the two ends of connecting hose 5 are welded with flange 6, and drain valve A3 is connected by flange 6 with drain valve B4.

Claims

1. a heat supply pipeline drain valve anti-icer, it is characterized in that: comprise and be positioned at water pipe (7) low spot and the drain pipe a(1 communicated with water pipe (7)), be positioned at return pipe (8) low spot and the drain pipe b(2 communicated with return pipe (8)), drain pipe a(1) with drain pipe b(2) be greater than drain pipe a(1 by length) and with drain pipe b(2) the connecting hose (5) of spacing be connected, at described connecting hose (5) and drain pipe a(1) between be provided with drain valve A(3), at connecting hose (5) and drain pipe b(2) between be provided with drain valve B(4).

2. a kind of heat supply pipeline drain valve anti-icer according to claim 1, is characterized in that: described connecting hose (5) is the metal connecting hoses of two ends with Steel Sleeve.

3. a kind of heat supply pipeline drain valve anti-icer according to claim 1 and 2, it is characterized in that: the drain pipe a(1 described) one end, drain pipe b(2) one end and the two ends of connecting hose (5) be respectively welded with flange (6), drain valve A(3) with drain valve B(4) be connected by flange (6).

4. a kind of heat supply pipeline drain valve anti-icer according to claim 1, is characterized in that: described drain pipe a(1) be fixed on water pipe (7) with welding manner, drain pipe b(2) be fixed on return pipe (8) with welding manner.