Heating device of high-pressure gas leakage pipeline

Abstract

The utility model belongs to the technical field of gas auxiliary equipment, and particularly relates to a heating device of a high-pressure gas leakage pipeline. The heating device of the high-pressure gas leakage pipeline comprises a pipe sleeve installed outside a gas leakage pipe, an annular bag body is arranged on the inner side of the pipe sleeve, the annular bag body is filled with a heat-conducting medium, a heating mechanism is arranged in the annular bag body, and after the pipe sleeve and the gas leakage pipe are positioned, the annular bag body is pressed and covered on the circumference of the gas leakage pipe; or the annular bag body is connected with the heating source through a circulating pipeline composed of the liquid inlet pipe and the liquid outlet pipe, and the power pump and the on-off valve are arranged on the circulating pipeline; or the annular bag body is connected with an injector with a clamping position through a conveying pipe and used for achieving pressurizing expansion of the annular bag body so that the annular bag body can be attached to and wrapped with the air leakage pipe; the heating device is matched with a high-pressure gas leakage pipeline for use, and has the characteristics of uniform heating of the gas leakage pipeline, high temperature conduction efficiency, prevention of freezing of the pipeline and a valve, and keeping of safe and smooth gas leakage.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of gas auxiliary equipment, specifically relates to a heating device of high pressure gas discharge pipeline. BACKGROUND

[0002] Gas is the general term of gaseous fuel, which can burn to release heat for urban residents and industrial enterprises. According to the requirement of the state to build a resource-saving and environment-friendly society, the opening of urban gas field and the extension of pipeline construction provide a rare opportunity for the development of China's urban gas.

[0003] At present, high pressure, super high pressure gas tank truck transportation is still relatively common, but when high pressure tank truck transportation arrives at gas facilities or station for gas discharge, in order to improve safety and efficiency, high efficiency and rapid discharge for tank body is needed; but high pressure super, high pressure gas is prone to icing when pressure is rapidly reduced, especially the pipe and quick connector are blocked due to icing, which affects the discharge efficiency and brings great safety hazard. INVENTION CONTENTS

[0004] The purpose of the utility model is to provide a heating device used in cooperation with high pressure gas discharge pipeline, which has the characteristics of uniform heating of discharge pipe, high temperature conduction efficiency, prevention of pipe and valve icing and maintenance of smooth discharge safety.

[0005] In order to achieve the above purpose, the technical scheme adopted by the utility model is:

[0006] A heating device of high pressure gas discharge pipeline, characterized by: a pipe sleeve is installed outside the discharge pipe, an annular capsule is arranged on the inner side of the pipe sleeve, the annular capsule is filled with heat conducting medium, a heating mechanism is arranged in the annular capsule, and the pipe sleeve is positioned on the discharge pipe after the annular capsule is pressed and covered on the circumference of the discharge pipe; or the annular capsule is connected with a heating source through a circulating pipeline composed of an inlet pipe and an outlet pipe, a power pump and an on-off valve are arranged on the circulating pipeline; or the annular capsule is connected with a syringe with a clamping position through a conveying pipe, so as to realize the inflation of the annular capsule by pressure charging, so that it is wrapped with the discharge pipe.

[0007] The additional technical features of the above-mentioned heating device of high pressure gas discharge pipeline also include:

[0008] The heating mechanism is a resistance wire heater or a semiconductor heating sheet, and the heating end is arranged in the annular capsule or the heating end is arranged in the heat source container of the heating source;

[0009] The heating mechanism or the heating source, the power pump and the on-off valve are electrically connected with an electric controller, and the electric controller is electrically connected with a temperature detection probe arranged inside the annular capsule and / or arranged inside or outside the gas exhaust pipe;

[0010] The electric controller is electrically connected with a gas detection probe arranged outside the gas exhaust pipe and / or a gas pressure detection probe arranged inside the gas exhaust pipe, and the electric controller is also electrically connected with an alarm;

[0011] The annular capsule is made of insulating heat-conductive silicone rubber, is sleeved on the gas exhaust pipe and has a width capable of covering the valve area in the gas exhaust pipe along the pipe axis.

[0012] Compared with the prior art, the heating device for the high-pressure gas exhaust pipeline has the following advantages: the annular capsule on the inner side is sleeved on the high-pressure gas exhaust pipe through the pipe sleeve of the heating device, the heat-conductive medium in the annular capsule is heated by the heating mechanism or the heating source connected through the circulating pipeline, the annular capsule can be expanded to tightly adhere to the gas exhaust pipe after being pressed by the pump body, the heating area is increased, the heat conduction efficiency is high, the pipe body is heated more uniformly, the deicing efficiency of the pipeline and the valve is high, the effect of preventing icing is good, the smoothness of the exhaust pipeline is ensured, the safety of the high-pressure gas is improved, and the advantages of simple and compact structure, safe and convenient use, economy and durability are achieved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structure schematic view of the heating device for the high-pressure gas exhaust pipeline (the heating mechanism is built-in);

[0014] Figure 2 It is a structure schematic view of the heating device for the high-pressure gas exhaust pipeline (the heating source is external);

[0015] Figure 3 It is a structure schematic view of the heating device for the high-pressure gas exhaust pipeline (the heating source is external); DETAILED DESCRIPTION

[0016] The heating device for the high-pressure gas exhaust pipeline provided by the utility model has the advantages that the annular capsule on the inner side is sleeved on the high-pressure gas exhaust pipe through the pipe sleeve of the heating device, the heat-conductive medium in the annular capsule is heated by the heating mechanism or the heating source connected through the circulating pipeline, the annular capsule can be expanded to tightly adhere to the gas exhaust pipe after being pressed by the pump body, the heating area is increased, the heat conduction efficiency is high, the pipe body is heated more uniformly, the deicing efficiency of the pipeline and the valve is high, the effect of preventing icing is good, the smoothness of the exhaust pipeline is ensured, the safety of the high-pressure gas is improved, and the advantages of simple and compact structure, safe and convenient use, economy and durability are achieved.

[0017] In the description of this utility model, unless otherwise stated, the terms "inner / outer", "upper / lower", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0018] It should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "set / equipped" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] like Figures 1-2 As shown, the heating device structure of the high-pressure gas venting pipeline includes a sleeve 1 installed outside the venting pipe a, an annular bladder 2 is provided inside the sleeve 1, the annular bladder 2 is filled with a heat-conducting medium 21, and a heating mechanism 31 is provided inside the annular bladder 2. After the sleeve 1 is positioned with the venting pipe a, the annular bladder 2 is pressed onto the circumference of the venting pipe a; or the annular bladder 2 is connected to the heating source 32 through a circulation pipeline composed of an inlet pipe 41 and an outlet pipe 42, and a power pump 51 and an on / off valve 52 are provided on the circulation pipeline.

[0020] Its working principle is as follows: The annular bladder 2 of the heating device is fitted onto the high-pressure gas vent pipe a, and then the sleeve 1 is installed on the outside of the annular bladder 2. After the sleeve 1 is positioned with the vent pipe a, the annular bladder 2 is pressed over the circumference of the vent pipe a. Since the annular bladder 2 is filled with heat-conducting medium 21, the bladder expands under pressure and heat and fits tightly against the pipe wall, which increases the heating area and improves the heat conduction efficiency. At the same time, the heating is more even, and the de-icing and anti-icing effects are better.

[0021] It should be noted that a heating mechanism 31 is installed inside the annular bladder 2, or it is connected to a heating source 32 through a circulation pipeline. The annular bladder 2 is connected to an inlet pipe 41 and an outlet pipe 42 to realize the circulation of the internal heat transfer medium 21. The heating source 32 includes a connecting container and a heating mechanism 31 installed inside the container. A power pump 51 and an on / off valve 52 are installed on the circulation pipeline to realize the circulation heating of the heat transfer medium 21. The on / off valve 52 and the power pump 51 work together to pressurize the annular bladder 2 so that it can fit tightly with the vent pipe a of different diameters.

[0022] like Figure 3As shown, this invention can also pressurize the annular capsule 2 using a syringe 11: the annular capsule 2 is connected to the syringe 11 with a locking mechanism via a delivery tube 12, which is used to inflate the annular capsule and make it fit snugly against the vent tube. The syringe 11 with the locking mechanism can be any commercially available crack repair injector, whose piston rod has a locking buckle. The locking buckle, i.e., the interlocking grooves, allows the lever to be pulled up and rotated 90 degrees to lock onto the back cover; rotating it in the opposite direction releases the lever, which automatically resets under the action of a spring. As an equivalent alternative, the syringe back cover and piston rod are connected by a threaded connection 13.

[0023] In the heating device structure that constitutes the aforementioned high-pressure gas venting pipeline,

[0024] —The heating mechanism 31 mentioned above can be a resistance wire heater. For safety reasons, it can also be a semiconductor heating element for more precise temperature control. Its heating end is placed inside the annular bladder 2 or inside the heat source container of the heating source 32. That is, the heating device has two assembly methods: built-in and external, which can be adjusted according to the specific usage scenario.

[0025] A semiconductor heating element is selected to heat the heat-conducting medium inside the annular bladder 2. The heating end of the semiconductor heating element is connected to and sealed inside the annular bladder 2, and the heat is quickly transferred to the heat-conducting medium to achieve rapid heating. A heat-absorbing sheet is set on the heat-absorbing surface at the other end of the semiconductor heating element, and the fan sends more heat from the air to the heat-absorbing sheet.

[0026] — Preferably, the heating mechanism 31 or heating source 32, power pump 51 and on / off valve 52 are all electrically connected to the electronic controller 6 to realize automatic control of the heating process. The electronic controller 6 (PLC microcontroller) also controls the power pump 51 to realize the circulation of the heat transfer medium 21, and adjusts the opening and closing of the on / off valve 52 to realize the pressure expansion of the annular bladder 2. After the electronic controller 6 is electrically connected to the temperature detection probe 61 set inside the annular bladder 2, it can monitor the temperature of the heat transfer medium 21 in real time. It can also be electrically connected to the temperature detection probe set inside or outside the vent pipe a to provide real-time feedback on the heating effect of the vent pipe a, which is used to further adjust the heating power. The whole process realizes closed-loop control.

[0027] The aforementioned electrical connection methods include necessary power lines, communication lines, and electrical components such as solenoid valve assemblies;

[0028] Further, the electric controller 6 is electrically connected with the gas detection probe 62 arranged outside the exhaust pipe a and / or the gas pressure detection probe 63 arranged inside the exhaust pipe a, and transmits the gas pressure data through the pipe and the valve to monitor the high-pressure gas exhaust process in real time, avoid the gas leakage problem, and is electrically connected with the alarm 64 (speaker, alarm lamp), and the alarm 64 sends an alarm through sound and light when the gas detection probe detects gas overflow, so as to eliminate the hidden danger in time.

[0029] Preferably, the annular capsule 2 is made of insulating heat-conducting silicone rubber, and the conductive rubber has the characteristics of high thermal conductivity, good elasticity, electrical insulation, easy deformation under low pressure, good sealing performance, etc., which can effectively deform elastically and conduct heat in time; the annular capsule 2 is sleeved on the exhaust pipe a and has a width along the pipe axis that can cover the valve b area in the exhaust pipe a, so as to increase the heating area, especially the valve b area, and the annular capsule 2 can uniformly heat to ensure smooth exhaust after covering the valve b area, where the gas flow, flow rate and pressure change are prone to icing.

[0030] The above-mentioned embodiments are only used to illustrate the technical solutions of the present application, and are not the limiting conditions for the implementation of the present application, so any other modifications or equivalent replacements of the technical solutions of the present application, such as the modification of the structure size and the internal structure, as long as they do not deviate from the spirit and scope of the technical solutions of the present application, should be covered in the scope of the claims of the present application.

Claims

1. A heating device for a high pressure gas bleed line, characterized in that: The invention relates to a heat preservation and heating device for a deflation tube, comprising a sleeve mounted on the outside of the deflation tube, an annular capsule being arranged inside the sleeve, a heat conducting medium being filled in the annular capsule, a heating mechanism being arranged in the annular capsule, the sleeve being positioned on the deflation tube so that the annular capsule is pressed against the circumference of the deflation tube; or the annular capsule is connected to a heating source through a circulating pipeline composed of an inlet pipe and an outlet pipe, a power pump and an on-off valve being arranged on the circulating pipeline; or the annular capsule is connected to a syringe with a clamping device through a delivery pipe, so as to realize the inflation of the annular capsule and make it adhere to the deflation tube.

2. A heating device for a high pressure gas bleed line according to claim 1, characterized in that: The heating mechanism is a resistance wire heater or a semiconductor heating sheet, the heating end of which is arranged inside the annular capsule or in a heat source container of the heating source.

3. A heating device for a high pressure gas bleed line according to claim 1 or 2, characterized in that: The heating mechanism or the heating source, the power pump and the on-off valve are electrically connected to an electric controller, the electric controller being electrically connected to a temperature detection probe arranged inside the annular capsule and / or arranged inside or outside the deflation tube.

4. A heating device for a high pressure gas bleed line according to claim 3, characterized in that: The electric controller is electrically connected to a gas detection probe arranged outside the deflation tube and / or a gas pressure detection probe arranged inside the deflation tube, and is also electrically connected to an alarm.

5. A heating device for high pressure gas bleed lines according to claim 1, characterized in that: The annular capsule is made of insulating heat conducting silicone rubber, the annular capsule being sleeved on the deflation tube and having a width along the axial direction of the tube which is capable of covering the valve area inside the deflation tube.

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