CN204718008U - Enclosed expansion tank - Google Patents

Abstract

The utility model discloses a kind of enclosed expansion tank and comprise casing, case lid, overflow pipe, circulation pipe, U-tube, blow-off pipe, feed pipe, swelling gasbag, U-tube filling pipe, sealed rubber, ball valve, breather pipe, ball-cock assembly, expansion tube; The top of casing and overflow pipe, U-tube filling pipe, circulation pipe, blow-off pipe, feed pipe, expansion tube welding; Case lid is connected with casing bolt; U-tube is connected with overflow pipe; The additional shroud ring of elastic force of swelling gasbag and case lid rubber is fixed; Sealed rubber is used for seal case and case lid; Ball valve controls U-tube filling pipe break-make; Breather pipe periphery is connected with the air inlet of swelling gasbag, and fixes with shroud ring; Ball-cock assembly is connected with feed pipe, passes through screwed connection.A kind of enclosed expansion tank utilizing the utility model to provide, reduces oxygen and is added in water, reduce the corrosion of pipeline and the growth of algae, indirectly improve the heat-transfer effect of heat exchanger, simultaneously need not ad hoc constant pressure pump, is environmental protection and energy saving products.

Description

Enclosed expansion tank

Technical field

The utility model relates to the water quality protection of air-conditioning matchmaker water system, relates to the anticorrosion of pipeline, can apply in Large Central Air Conditioning System system, is a kind of environmental protection and energy saving product.

Background technology

Because expansion tank conventional in current central air conditioner system and Constant pressure tank carry out level pressure, and the water in case is communicated by overflow pipe and not close case lid and air, when the oxygen in air will be dissolved in water, increase water to Metal pipeline corrosion, the growth of algae can be increased simultaneously, algae surplus is at heat exchanger surface, cause the thermal efficiency to decline, energy consumption increase, though and Constant pressure tank can form closed Water System, but there is constant pressure pump frequent starting, cause the increase of water pump damage and energy consumption.Develop a kind of enclosed expansion tank thus.

Summary of the invention

The utility model is intended to solve existing air-conditioner water system and is carrying out level pressure with enclosed expansion tank, provides a kind of environmental protection and energy-conservation expansion tank.

Described enclosed expansion tank comprises casing, case lid, overflow pipe, circulation pipe, U-tube, blow-off pipe, feed pipe, swelling gasbag, U-tube filling pipe, sealed rubber, ball valve, breather pipe, ball-cock assembly, expansion tube;

Described casing is for holding swelling water or playing water supply tank;

Described case lid is used for top box body, simultaneously and sealed rubber cooperation seal, prevent air from entering expansion tank;

Described overflow pipe exceedes the unnecessary water of predetermined water level for discharging in water tank;

Described circulation pipe, when water tank and expansion tube may freeze, is used for making water circulation;

Described U-tube is used to water seal casing and outside air, prevents air from entering casing by overflow pipe;

Draining when described blow-off pipe is used for casing maintenance;

Described feed pipe is used for casing moisturizing;

Described swelling gasbag is used for holding the air expanded;

Described U-tube filling pipe is used for U-tube moisturizing;

Described sealed rubber is used for seal case and case lid;

Described ball valve is used for switch U-tube filling pipe;

Described breather pipe is used for logical because of the air passed in and out that expands;

Described expansion tube is used for the turnover of system swelling water;

Described ball-cock assembly is used to the liquid level controlling expansion tank.

Casing is for storing expansion water, and casing is connected by caulking gum with case lid, the top of casing and overflow pipe, U-tube filling pipe, circulation pipe, blow-off pipe, feed pipe, expansion tube welding;

Case lid is connected by flange bolt with casing, and centre sealed rubber seals;

Breather pipe is welded on case lid;

Overflow pipe is located at the upper limit of expansion tank, and expansion tank welding;

Swelling gasbag rubber makes, the volume between the control liquid level of volume and water tank to overflow pipe, and the air inlet of swelling gasbag is connected with breather pipe;

U-tube and overflow pipe communicate, and U-tube is located at the bottom of expansion tank;

Feed pipe is to casing moisturizing use, and control liquid level by ball float, ball-cock assembly and feed pipe pass through screwed connection;

Ball valve is provided with in the middle of U-tube filling pipe;

U-tube filling pipe is connected with U-tube, is controlled by ball valve, is in closed condition at ordinary times, when U-tube does not have spilling water for a long time, opens ball valve, when water flows out from finder outlet, closes immediately;

A kind of enclosed expansion tank utilizing the utility model to provide, the oxygen reducing air is added in water, reduces the corrosion of pipeline, reduce the growth of algae in water, indirectly improve the heat-transfer effect of heat exchanger, simultaneously need not ad hoc constant pressure pump, be environmental protection and energy saving products.

Accompanying drawing explanation

Fig. 1 is the utility model enclosed expansion tank structural representation.

Detailed description of the invention

Below in conjunction with accompanying drawing, the utility model content is further illustrated.

As shown in Figure 1, for the utility model enclosed expansion tank structural representation, comprise casing 1, case lid 2, overflow pipe 3, circulation pipe 4, U-tube 5, blow-off pipe 6, feed pipe 7, swelling gasbag 8, U-tube filling pipe 9, sealed rubber 10, ball valve 11, breather pipe 12, ball-cock assembly 13, expansion tube 14;

Described casing 1 is for holding swelling water or playing water supply tank, and flange-interface is made on casing 1 top, and the top of casing 1 and overflow pipe 3, U-tube filling pipe 9, circulation pipe 4, blow-off pipe 6, feed pipe 7, expansion tube 14 weld;

Described case lid 2, for top box body 1, is connected with casing 1 effect simultaneously having air-prevention to enter casing 1 with bolt, centre sealed rubber 10 seals;

Described overflow pipe 3 is used to the water discharging super liquid level, and overflow pipe 3 is located at the upper limit of casing 1, and casing is welded together by welding;

Circulation pipe 4 is located at the bottom of casing 1, and the other end is connected with the backwater main of system;

Described U-tube 5 is effects of seal case 1 outside air, is connected with overflow pipe 3, and U-tube 5 is located at lower than bottom casing 1;

Described blow-off pipe 6 is used to casing 1 to maintain draining, is located at the bottom of swelling water casing 1, and welding box body;

Described feed pipe 7, is to expansion tank 1 moisturizing, controlled, and casing 1 welds by ball-cock assembly 13;

Described swelling gasbag 8 is the air with holding in expansion rear box 1, and the case lid 2 additional shroud ring of the elastic force of rubber is fixed;

Described U-tube filling pipe 9 water in casing 1 is used to U-tube 5 moisturizing, ensures U-tube 5 water, is controlled by ball valve 11;

Described sealed rubber 10 is used for seal case 1 and case lid 2;

Described ball valve 11 is used to control U-tube filling pipe 9 break-make;

Described breather pipe 12 is by air additional because of expansion, is welded on case lid 2, and breather pipe 12 periphery is connected with the air inlet of swelling gasbag 8, and fixes with shroud ring;

Described ball-cock assembly 13 is the liquid levels controlling casing 1, is connected, passes through screwed connection with feed pipe 7.

Expansion tank expansion process, comprises the steps:

(1) when in system during shrinkage, expansion tank middle water level declines;

(2) ball-cock assembly is opened, and feed pipe starts feedwater to expansion tank;

(3) when casing liquid level height is to the upper limit of expansion tank, ball-cock assembly is closed, and feed pipe stops feedwater;

(4) when the water level decreasing of expansion tank, in swelling gasbag, air just discharges to expansion tank;

(5) when the hydro-thermal in system is swollen, expansion tank water level rises;

(6) air in expansion tank enters swelling gasbag;

(7) when expansion tank water level continues the water level being increased beyond overflow pipe, the water in expansion tank is by passing through U-tube outwardly draining again after overflow pipe;

(8) a part of water is accumulated in U-tube, plays disjunction expansion tank and extraneous effect;

(9) during current check, ball valve is opened, until ball valve is closed in finder outlet water outlet.

Expansion tank draining, comprises the steps:

(1) when expansion tank wants maintaining, feed pipe is closed;

(2) blow-off pipe is opened, draining.

Finally, also should be noted that, that more than enumerates is only one of the present utility model and specifically executes example.Obviously, the utility model is not limited to above embodiment, can also have many for different sizes and different and material, and the diverse location of perforate, also also has many distortion.That those of ordinary skill in the art directly can derive from content disclosed in the utility model or associate all distortion, all should think the utility model protection domain.

Claims (1)

1. enclosed expansion tank, its feature comprises casing, case lid, overflow pipe, circulation pipe, U-tube, blow-off pipe, feed pipe, swelling gasbag, U-tube filling pipe, sealed rubber, ball valve, breather pipe, ball-cock assembly, expansion tube;

Described casing is for holding swelling water or playing water supply tank, and case lid is connected by flange bolt with casing, and centre sealed rubber seals;

Described case lid is used for top box body, simultaneously and sealed rubber cooperation seal, prevent air from entering expansion tank;

Described overflow pipe exceedes the unnecessary water of predetermined water level for discharging in water tank, be located at the upper limit of expansion tank, and expansion tank welding;

Described circulation pipe is when water tank and expansion tube may freeze, and be used for making water circulation, the bottom of casing established by circulation pipe, and the other end is connected with the backwater main of system;

Described U-tube is used to water seal casing and outside air, prevents air from entering casing by overflow pipe, and U-tube and overflow pipe communicate, and U-tube is located at the bottom of expansion tank;

Draining when described blow-off pipe is used for casing maintenance, is used to casing to maintain draining, is located at the bottom of swelling water casing, and welding box body;

Described expansion tube is used for the turnover of system swelling water, expansion tube and welding box body;

Described swelling gasbag is used for holding the air expanded, and swelling gasbag is the air with holding in expansion rear box, and the additional shroud ring of the elastic force of case lid rubber is fixed;

Described U-tube filling pipe is used for U-tube moisturizing, and U-tube filling pipe is connected with U-tube, is controlled by ball valve, is in closed condition at ordinary times, when U-tube does not have spilling water for a long time, opens ball valve, when water flows out from finder outlet, closes immediately;

Described sealed rubber is used for seal case and case lid;

Described ball valve is used for switch U-tube filling pipe, and ball valve and U-tube filling pipe are by screwed connection, is used for controlling U-tube filling pipe break-make;

Described breather pipe is used for logical because of the air passed in and out that expands, and breather pipe is welded on case lid.