Gas leakage prevention device of gas mold temperature controller

Abstract

The utility model relates to a gas leakage prevention device of a gas mold temperature controller, which aims at solving the technical problems that the current common rubber ring is easy to cause rubber fatigue and reduce the sealing effect on the basis of self material influence and in a high-pressure working state, and comprises a gas mold temperature controller body, and a transmission pipe is arranged at the top of the gas mold temperature controller body. The top of the conveying pipe is connected with a gas valve, the conveying pipe is connected with the gas valve through a flange, and a sealing structure is arranged between the conveying pipe and the gas valve. The multiple elastic pieces are adopted in the sealing structure to conduct multi-directional buffering on impact potential energy of fluid, stress concentration damage is reduced, meanwhile, stress fatigue of the sealing structure is effectively reduced, and therefore extrusion deformation of the sealing inner ring to the sealing rubber outer ring is reduced, gas leakage is prevented, and the sealing effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas mold temperature controllers, in particular to a gas leakage prevention device for gas mold temperature controllers. Background Art

[0002] Gas mold temperature controller is also called thermal oil heater. Thermal oil heater uses coal, heavy oil, light oil, combustible gas and other combustible materials to burn or electrically heat. Thermal oil is used as the heat carrier. A circulating oil pump is used to force liquid phase circulation. After the heat energy is transferred to the heat-using equipment, it is returned to the temperature control equipment for reheating.

[0003] Combustible gases include natural gas and coal gas. The storage conditions of coal gas need to be under high pressure. The storage pressure conditions of natural gas are lower than those of coal gas.

[0004] In the existing gas mold temperature controller, the gas delivery valve and the pipe connected to the valve are mostly sealed with a rubber ring to prevent the combustible gas from leaking. Due to the influence of the rubber ring material and the high-pressure working condition of gas transmission, the sealing method of the ordinary rubber ring is prone to cause rubber fatigue and reduce the sealing effect. Therefore, it is particularly important to design a rubber ring sealing device with high efficiency. In view of this, we propose a gas leakage prevention device for the gas mold temperature controller. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art, meet actual needs, and provide a gas leakage prevention device for a gas mold temperature controller to solve the technical problems that the current ordinary rubber ring is easily affected by its own material and easily causes rubber fatigue under high-pressure working conditions, thereby reducing the sealing effect.

[0006] In order to achieve the purpose of the utility model, the technical solution adopted by the utility model is: to design a gas leakage prevention device for a gas mold temperature controller, including a gas mold temperature controller body, a transmission pipe is provided on the top of the gas mold temperature controller body, a gas valve is connected to the top of the transmission pipe, the transmission pipe and the gas valve are flange-connected, a sealing structure is provided between the transmission pipe and the gas valve, and the sealing structure is matched and engaged with the inner side of the flange connecting the transmission pipe and the gas valve.

[0007] Preferably, the sealing structure includes a sealing rubber outer ring, which is matched and embedded in the inner side of the flange connecting the transmission pipe and the air valve, and a groove is provided on the inner side of the sealing rubber outer ring, and a sealing inner ring is engaged in the groove, and a plurality of guide grooves are distributed at annular intervals on the surface of the sealing rubber outer ring.

[0008] Preferably, the wall thickness of the sealing inner ring is greater than the depth of the groove.

[0009] Preferably, the guide groove is in the shape of a right-angled triangle.

[0010] Preferably, the sealing inner ring includes a metal spring sheet, and the metal spring sheet is provided in two groups. One end of the metal spring sheet is connected to a limiting block, and a limiting groove is provided inside the other end of the metal spring sheet, and a group of springs are connected inside the limiting groove.

[0011] Preferably, the limit block is matched and engaged with the limit groove, and the limit block is made of rubber.

[0012] Preferably, the two groups of metal spring sheets are elastically connected end to end.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model provides a sealing structure to effectively buffer and disperse the impact force of the fluid conveying gas while achieving the sealing effect. A plurality of elastic parts are used in the sealing structure to buffer the impact potential energy of the fluid in multiple directions, thereby reducing stress concentration damage and effectively reducing stress fatigue of the sealing structure, thereby reducing the extrusion deformation of the sealing inner ring on the sealing rubber outer ring, preventing gas leakage and improving the sealing effect.

[0015] 2. In the utility model, the sealing rubber outer ring is limited and fixed on the inner side of the flange connecting the transmission pipe and the gas valve. After the gas valve is opened, the coal gas rushes into the transmission pipe, and the guide groove effectively guides the coal gas while preliminarily buffering the coal gas flow. The coal gas passing through the guide groove is affected by its inclined surface and flows rapidly toward the middle of the sealing rubber outer ring, reducing the residence time of the impact force of the coal gas on the sealing rubber outer ring, thereby reducing the rubber fatigue of the sealing rubber outer ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the partial disassembled structure of the utility model;

[0018] Figure 3 It is a partial cross-sectional structural schematic diagram of the utility model;

[0019] Figure 4 This is a schematic diagram of the disassembled structure of the sealing inner ring of the utility model;

[0020] In the figure: 1. Gas mold temperature controller body; 2. Transmission pipe; 3. Gas valve; 4. Sealing structure;

[0021] 401, sealing rubber outer ring; 402, clamping groove; 403, sealing inner ring; 403a, metal spring; 403b, limiting block; 403c, limiting groove; 403d, spring; 404, guide groove. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0023] A gas leakage prevention device for a gas mold temperature controller, see Figures 1 to 4 , including a gas mold temperature controller body 1, a transmission pipe 2 is arranged on the top of the gas mold temperature controller body 1, a gas valve 3 is connected to the top of the transmission pipe 2, the transmission pipe 2 and the gas valve 3 are flange-connected, a sealing structure 4 is arranged between the transmission pipe 2 and the gas valve 3, and the sealing structure 4 is matched and snapped on the inner side of the flange connecting the transmission pipe 2 and the gas valve 3. The utility model effectively buffers and disperses the impact force of the fluid conveying the coal gas by setting the sealing structure 4 while achieving the sealing effect, and multiple elastic parts are used in the sealing structure 4 to buffer the impact potential energy of the fluid in multiple directions, reduce stress concentration damage, and effectively reduce the stress fatigue of the sealing structure 4, prevent gas leakage, and improve the sealing effect.

[0024] Specifically, the sealing structure 4 includes a sealing rubber outer ring 401, which is matched and embedded in the inner side of the flange connecting the transmission pipe 2 and the air valve 3. A groove 402 is provided on the inner side of the sealing rubber outer ring 401, and a sealing inner ring 403 is engaged inside the groove 402. Furthermore, the wall thickness of the sealing inner ring 403 is greater than the depth of the groove 402. A plurality of guide grooves 404 are distributed at annular intervals on the surface of the sealing rubber outer ring 401. Furthermore, the guide grooves 404 are in the shape of right-angled triangles. In the utility model, the sealing rubber outer ring 401 is limited and fixed on the inner side of the flange connecting the transmission pipe 2 and the gas valve 3. After the gas valve 3 is opened, the coal gas rushes into the transmission pipe 2, and the guide groove 404 effectively guides the coal gas while preliminarily buffering the coal gas flow. The coal gas passing through the guide groove 404 flows rapidly toward the middle of the sealing rubber outer ring 401 under the influence of its inclined surface, reducing the residence time of the impact force of the coal gas on the sealing rubber outer ring 401, thereby reducing the rubber fatigue of the sealing rubber outer ring 401.

[0025] It is worth mentioning that the sealing inner ring 403 includes a metal spring 403a, one end of the metal spring 403a is connected to a limiting block 403b, and a limiting groove 403c is opened on the inner side of the other end of the metal spring 403a. Furthermore, the limiting block 403b and the limiting groove 403c are matched and engaged with each other, and the limiting block 403b is made of rubber. Furthermore, the two groups of metal springs 403a are elastically connected end to end, and a group of springs 403d is connected inside the limiting groove 403c. In the utility model, when the coal gas passes through the sealing inner ring 403, the coal gas is affected by the high pressure of the coal gas and squeezes the arc-shaped metal spring piece 403a. At this time, the limit block 403b connected to the metal spring piece 403a changes its angle slightly and applies pressure to the spring 403d fitted therewith, and the spring 403d is compressed. In this process, the impact pressure of the coal gas is dispersed through the metal spring piece 403a, the limit block 403b and the spring 403d respectively, thereby reducing the stress concentration of the sealing inner ring 403 and the impact damage of the sealing inner ring 403, thereby reducing the extrusion deformation of the sealing inner ring 403 on the sealing rubber outer ring 401.

[0026] Working principle: Now connect the external gas pipeline with the gas valve 3. When transmitting gas, open the gas valve 3, and the gas rushes into the transmission pipe 2. The guide groove 404 on the surface of the sealing rubber outer ring 401 guides the gas and initially buffers the gas flow. The gas passing through the guide groove 404 flows rapidly to the middle of the sealing rubber outer ring 401 under the influence of its inclined surface, reducing the residence time of the gas impact force on the sealing rubber outer ring 401. When the gas passes through the sealing inner ring 403, it is affected by the higher pressure of the gas. The arc-shaped metal spring piece 403a is squeezed, and the limiting block 403b connected to the metal spring piece 403a changes its angle slightly and applies pressure to the spring 403d fitted therewith, so that the spring 403d is compressed. In this process, the impact pressure of the gas is dispersed through the metal spring piece 403a, the limiting block 403b and the spring 403d respectively, thereby reducing the stress concentration of the sealing inner ring 403 and the impact damage of the sealing inner ring 403, thereby reducing the extrusion deformation of the sealing inner ring 403 on the sealing rubber outer ring 401.

[0027] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A gas leakage prevention device for a gas mold temperature controller, comprising a gas mold temperature controller body (1), It is characterized in that A transmission pipe (2) is provided on the top of the gas mold temperature controller body (1), and a gas valve (3) is connected to the top of the transmission pipe (2). The transmission pipe (2) and the gas valve (3) are flange-connected, and a sealing structure (4) is provided between the transmission pipe (2) and the gas valve (3). The sealing structure (4) is matched and engaged with the inner side of the flange connecting the transmission pipe (2) and the gas valve (3).

2. The gas leakage prevention device for the gas mold temperature controller according to claim 1, It is characterized in that The sealing structure (4) comprises a sealing rubber outer ring (401), the sealing rubber outer ring (401) being matched and embedded in the inner side of a flange connecting the transmission pipe (2) and the air valve (3), a groove (402) being provided on the inner side of the sealing rubber outer ring (401), a sealing inner ring (403) being engaged inside the groove (402), and a plurality of guide grooves (404) being distributed at annular intervals on the surface of the sealing rubber outer ring (401).

3. The gas leakage prevention device for the gas mold temperature controller according to claim 2, It is characterized in that The wall thickness of the sealing inner ring (403) is greater than the depth of the groove (402).

4. The gas leakage prevention device for the gas mold temperature controller according to claim 2, It is characterized in that The guide groove (404) is in the shape of a right-angled triangle.

5. The gas leakage prevention device for the gas mold temperature controller according to claim 2, It is characterized in that The sealing inner ring (403) comprises a metal spring (403a), wherein two groups of the metal spring (403a) are provided, one end of the metal spring (403a) is connected to a limiting block (403b), and a limiting groove (403c) is provided inside the other end of the metal spring (403a), and a group of springs (403d) are connected inside the limiting groove (403c).

6. The gas leakage prevention device for the gas mold temperature controller according to claim 5, It is characterized in that The limiting block (403b) is matched and engaged with the limiting groove (403c), and the limiting block (403b) is made of rubber.

7. The gas leakage prevention device for the gas mold temperature controller according to claim 5, It is characterized in that The two groups of metal spring sheets (403a) are elastically connected end to end.

Images