CN210771012U - Anti-freezing pipe for low-nitrogen gas boiler - Google Patents

Abstract

The utility model discloses a low nitrogen gas boiler anti-freeze tube, include: the elastic tyre comprises a pipe body and an elastic tyre body, wherein two ends of the pipe body are respectively connected with a water inlet pipe and a water outlet pipe, the elastic tyre body comprises an inner cavity and an outer cavity, and harmless gas is filled in the elastic tyre body; the elastic carcass is in the body, the biggest footpath length of elastic carcass under natural state slightly is greater than the internal diameter of body, makes the elastic carcass is fixed on the body inner wall with the joint. The utility model has the advantages of provide a pipe that prevents frostbite for low nitrogen gas boiler, can realize preventing frostbite of water pipe under the circumstances of not circular telegram, and with low costs, maneuverability is strong.

Description

Anti-freezing pipe for low-nitrogen gas boiler

Technical Field

The utility model relates to a pipe field prevents frostbite. More particularly, the present invention relates to a low nitrogen gas boiler anti-freeze tube.

Background

With the promotion of coal-to-gas policies and low emission requirements, low-nitrogen gas boilers are increasingly widely used in boiler rooms, and users have higher requirements on safety and comfort of the low-nitrogen gas boilers. Meanwhile, the low-nitrogen gas-fired boiler faces more and more extensive use environment. Therefore, it is necessary to improve reliability and safety of the system itself in response to various environments.

In winter, the low-nitrogen gas-fired boiler is usually in a lower environmental temperature in the process of maintenance or alternate use. Because the pipeline is filled with water, and the water freezes at zero degree or below and expands in volume when freezing. Therefore, when the low-nitrogen gas-fired boiler is in the environment temperature for a long time, the problems of pipeline icing, pipeline expansion crack, water leakage and the like are difficult to avoid, and troubles and potential safety hazards are brought to the use of users.

In order to solve the problems, the prior art often adds an electric heating element on the low-nitrogen gas-fired boiler, and when the ambient temperature is lower, the heating element is started to keep the pipeline from freezing. However, considering that the boiler does not stand for a long time in the case of being filled with water in winter due to the heating application of the boiler, the cost of the additional electric heating unit is high, and the volume is large; meanwhile, a small number of boiler room managers can turn off the power supply when the low-nitrogen gas boiler is not used, so that the arranged heating element cannot be started, and the problems of frost cracking, water leakage and the like caused by the failure of the device are solved.

In order to solve the problem that the low-nitrogen gas-fired boiler is easy to freeze and leak water under the condition of no power insertion in a low-temperature environment, a device which can solve the problem without electrifying is needed.

Disclosure of Invention

An object of the present invention is to solve at least the above problems and to provide a low nitrogen gas boiler anti-freezing pipe which prevents the water pipe wall from being broken to prevent freezing by placing an elastic body inside the anti-freezing pipe, filling the elastic body with harmless gas, and absorbing the excessive expansion volume by using the compressibility of the gas when water freezes.

To achieve these objects and other advantages and in accordance with the purpose of the invention, there is provided a low-nitrogen gas boiler anti-freezing tube, comprising: the elastic tyre comprises a pipe body and an elastic tyre body, wherein two ends of the pipe body are respectively connected with a water inlet pipe and a water outlet pipe, the elastic tyre body comprises an inner cavity and an outer cavity, and harmless gas is filled in the elastic tyre body; the elastic carcass is in the body, the biggest footpath length of elastic carcass under natural state slightly is greater than the internal diameter of body, makes the elastic carcass is fixed on the body inner wall with the joint.

Preferably, the outer wall of the pipe body is provided with a fixed connecting device which can be connected with a water inlet pipe and a water outlet pipe of the boiler.

Preferably, said elastomeric carcass is made of a rubber-like elastomeric material.

Preferably, the volume of said carcass is 10-15% of the volume of the tubular body.

Preferably, the outer cavity of the elastic tyre body is provided with elastic bulges, the elastic bulges are uniformly distributed on the outer cavity, and the three-dimensional shape of the bulges is a cone or a sphere.

Preferably, the two ends of the elastic carcass which are farthest away are respectively provided with a clamping groove and a clamping end; the clamping groove is a rigid cavity with a hollow inner part, a circular opening is formed in the rigid cavity, and the clamping end is an elastic bulge; the diameter of the elastic bulge is slightly larger than that of the circular opening, so that the elastic bulge on the elastic tire body is buckled into the circular opening on the other adjacent elastic tire body, and the two adjacent elastic tire bodies are combined and connected.

The invention at least comprises the following beneficial effects:

1. the elastic tire body is placed in the anti-freezing pipe, the harmless gas is filled in the anti-freezing pipe, when water is frozen, redundant expansion volume is absorbed through compressed gas, the anti-freezing purpose is achieved, and an effective anti-freezing measure is provided for the water pipe of the low-nitrogen gas boiler.

2. The utility model discloses well elastic matrix body of taking need not insert the electricity, need not also use extra fixing device to go to fix on the pipe wall, under the condition of not electrified winter, can realize preventing frostbite of water pipe, and elastic matrix body gets puts the convenience, can change the position at any time, easy operation, convenience can use on a large scale.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

FIG. 1 is a schematic representation of the structure of a carcass according to one of the solutions of the present invention;

FIG. 2 is a schematic view of a raised structure on the outer cavity of the elastomeric carcass according to one embodiment of the present invention;

FIG. 3 is a schematic structural diagram of the assembly of the anti-freezing pipe and the water inlet and outlet pipe according to one embodiment of the present invention;

FIG. 4 is a schematic structural diagram of an elastic tire body with clamping ends and clamping grooves at two ends according to one embodiment of the present invention;

FIG. 5 is a schematic view of the assembled structure of the elastomeric carcass according to one of the solutions of the present invention.

Detailed Description

The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.

It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

As shown in fig. 1 to 5, the present invention provides a low-nitrogen gas boiler anti-freezing tube, comprising: the device comprises a pipe body 1 and an elastic tire body 2, wherein two ends of the pipe body 1 are respectively connected with a water inlet pipe 3 and a water outlet pipe 4, the elastic tire body 2 comprises an inner cavity 21 and an outer cavity 22, and harmless gas is filled in the elastic tire body 2; the elastic carcass 2 is arranged in the tube body 1, and the maximum diameter length of the elastic carcass 2 in a natural state is slightly larger than the inner diameter of the tube body 1, so that the elastic carcass 2 is fixed on the inner wall of the tube body 1 in a clamping manner; the elastic carcass 2 is made of silica gel or rubber elastic materials.

The using method is that the elastic tire body 2 is adjusted to the size suitable for the inner diameter of the pipe body 1 and is arranged on the inner wall of the pipe body 1 in a clamping way; the shape of the elastic carcass 2 can be U-shaped or circular, and the harmless gas filled in the elastic carcass can be air or nitrogen; the two ends of the pipe body 1 are connected with the water inlet and outlet pipe through connecting devices such as hoops, threads or flanges. Under the low temperature condition in winter, the accumulated water in the pipe body 1 freezes when meeting cold, the volume expands, and the elastic pipe body 2 in the pipe body 1 is compressed, and because the gas in the elastic pipe body 2 has compressibility, the compressed volume of the gas is reduced, partial expansion volume can be borne, the compression force on the inner wall of the pipe body 1 when the water freezes and expands is reduced, and the effect of preventing the pipe body 1 from frost cracking is achieved; adopt this technical scheme can realize the frost crack prevention of water pipe under the circumstances of not circular telegram, and the elastic matrix body 2 who uses utilizes the characteristic joint of self on 1 inner wall of body, gets to put the convenience, and is with low costs, maneuverability is strong.

In another technical scheme, the outer wall of the anti-freezing pipe body 1 is provided with the fixed connection device 5, the fixed connection device 5 is a threaded connection device, the pipe body 1 is fixedly connected with the water inlet pipe 3 and the water outlet pipe 4, the water valve 6 is arranged on the water inlet pipe, the tight connection of the whole pipeline is ensured through threaded connection, and the safety and the protection performance are improved.

In another technical scheme, the elastic carcass 2 is made of rubber, so that the elastic carcass can be ensured to have enough elasticity and can bear the volume expansion when water is frozen, and the cost can be reduced.

In another technical scheme, the volume of the elastic tire body 2 accounts for 10-15% of the volume of the pipe body 1, and by using the elastic tire body with the volume, the volume of the elastic tire body can be reduced to the maximum extent and the utilization rate of a pipeline can be increased when an anti-freezing effect is achieved.

In another technical scheme, elastic bulges 7 are arranged on outer cavities 22 of the elastic tire body 2, the elastic bulges 7 are uniformly distributed on the outer cavities 22, and the three-dimensional shape of the elastic bulges 7 is a cone or a sphere; the beneficial effect that adopts this technical scheme to produce is, utilizes the frictional force of elastic bulge 7 and body 1 inner wall, fixes elasticity matrix 2 on body 1 inner wall better, prevents its slip.

In another technical scheme, the two ends of the elastic carcass 2 which are farthest away are respectively provided with a clamping groove 8 and a clamping end 9; the clamping groove 8 is a rigid cavity 81 with a hollow inner part, a circular opening 82 is formed in the rigid cavity, and the clamping end 9 is an elastic bulge; the diameter of the elastic bulge is slightly larger than that of the circular opening 82, so that the elastic bulge on the elastic tire body 2 is buckled into the circular opening 82 on the other adjacent elastic tire body, and the two adjacent elastic tire bodies are combined and connected; by adopting the technical scheme, different elastic tire bodies can be assembled and spliced, so that the anti-freezing tire is applied to anti-freezing pipes with different pipe diameters, the application range of the elastic tire bodies is expanded, and the cost is saved.

The number of apparatuses and the scale of the process described herein are intended to simplify the description of the present invention. Applications, modifications and variations of the anti-freeze tube for a low nitrogen gas boiler of the present invention will be apparent to those skilled in the art.

While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.

Claims (6)

1. The anti-freezing pipe for the low-nitrogen gas boiler is characterized by comprising a pipe body and an elastic pipe body, wherein two ends of the pipe body are respectively connected with a water inlet pipe and a water outlet pipe, the elastic pipe body comprises an inner cavity and an outer cavity, and harmless gas is filled in the elastic pipe body; the elastic carcass is in the body, the biggest footpath length of elastic carcass under natural state slightly is greater than the internal diameter of body, makes the elastic carcass is fixed on the body inner wall with the joint.

2. The antifreeze tube for a low-nitrogen gas boiler as set forth in claim 1, wherein said tube body has fixing means on an outer wall thereof for connecting with the boiler inlet and outlet pipes.

3. The low-nitrogen gas boiler anti-freezing tube as claimed in claim 1, wherein said elastic carcass is made of rubber-like elastic material.

4. The antifreeze tube for a low-nitrogen gas boiler as set forth in claim 1, wherein said elastic carcass comprises 10 to 15% by volume of the tube body.

5. The anti-freezing pipe for low-nitrogen gas boiler as claimed in claim 1, wherein the outer cavity of the elastic body is provided with elastic protrusions, the elastic protrusions are uniformly distributed on the outer cavity, and the three-dimensional shape of the protrusions is cone or sphere.

6. The anti-freezing pipe for a low-nitrogen gas boiler as claimed in claim 1, wherein the two ends of the elastic carcass which are farthest away are respectively provided with a clamping groove and a clamping end; the clamping groove is a rigid cavity with a hollow inner part, a circular opening is formed in the rigid cavity, and the clamping end is an elastic bulge; the diameter of the elastic bulge is slightly larger than that of the circular opening, so that the elastic bulge on the elastic tire body is buckled into the circular opening on the other adjacent elastic tire body, and the two adjacent elastic tire bodies are combined and connected.

Images