CN210510421U - Thrombus type temperature control fireproof expansion valve - Google Patents

Abstract

The utility model discloses a thrombus formula control by temperature change fire prevention expansion valve. The medium valve comprises a hollow valve body and a valve core which is attached to the inner side of the valve body, wherein a medium channel is arranged in the valve core, a medium inlet and a medium outlet are respectively arranged at the positions, corresponding to the two ends of the medium channel, on the valve body, the valve core is a thermally expanded valve core, and the medium channel can be sealed by the valve core in a thermally expanded state so as to block a medium from passing through. The utility model discloses a case of thermal expansion material, the temperature of being heated when the case surpasss a definite value after automatic beginning inflation, do not need other extra start signal or effort, the medium passageway is closed in the automatic inflation, and then the effect that the medium passes through is blocked in the realization, simple structure and reliability are high, can extensively be arranged in like natural gas, toxic gas and special gas supply system, but self-closing prevents to leak or combustion-supporting taking place the conflagration.

Description

Thrombus type temperature control fireproof expansion valve

Technical Field

The utility model relates to a fire-proof equipment technical field, concretely relates to thrombus formula control by temperature change fire prevention expansion valve.

Background

In gas supply systems for natural gas, toxic gas and special gas, the gas source and the gas using place are usually separated into two spaces in consideration of safety, and the two spaces are communicated through the gas supply system to realize gas transmission. In general, for convenience of use, the pipeline valve outside the gas space is normally open, and only the valve inside the gas space is opened and closed according to the use condition, so that gas supply or interruption is realized. Once a fire disaster occurs in the gas space, the temperature of the gas space can reach 600-. There are a lot of utility model or utility model patents to this field at present, for example: utility model ZL201080012889.5 discloses a fire damper that locks by expansion of the metal components; utility model patent ZL201520633835.0 discloses a fire prevention valve with expansion seal function utilizes the thermal expansion sealing strip to link blade and valve body for a totally enclosed whole to realize sealed effect. However, there are still several problems: 1. the more complicated the structure of the sealing valve is, the lower the reliability in fire environment is, and the higher the cost is, which is not good for the popularization of the use; 2. the high temperature resistance is poor, the service temperature of most sealing valve bodies is below 500 ℃, and after the temperature of the valve bodies exceeds 500 ℃, partial components in the valve bodies lose efficacy due to high temperature, so that the function realization of the whole valve body is influenced; 3. manual or external force is required to start sealing, rather than automatically starting the fire-proof sealing function according to environmental changes.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a thrombus formula control by temperature change fire prevention expansion valve to the not enough of prior art existence.

In order to achieve the above object, the utility model provides a thrombus formula control by temperature change fire prevention expansion valve, including hollow valve body and with the valve core that the valve body inboard kept the laminating to set up, be equipped with medium channel in the valve core, be equipped with medium import and medium export respectively with the corresponding position at medium channel both ends on the valve body, the valve core is for receiving the thermal expansion case, the case can seal medium channel under the thermal expansion state to block that the medium passes through.

Further, the valve body is a metal valve body or a ceramic valve body.

Further, the metal valve body comprises a stainless steel valve body, a cast iron valve body and a copper valve body.

Furthermore, the valve core comprises a porcelainized foamed polymer valve core or an inorganic expansion plugging material valve core, and the valve core is in a hollow straight cylinder shape, a bent cylinder shape or a spherical shape.

Further, the medium channel is in a straight tube shape, a bent tube shape or a spiral tube shape.

Further, the valve body comprises two detachably connected branch valve bodies.

Furthermore, the expansion sealing temperature of the valve core is 80-250 ℃, and the bearable temperature of the valve core after expansion sealing is 400-1200 ℃.

Further, the two sub valve bodies are in threaded connection.

Furthermore, the ceramic foaming high-molecular valve core comprises a ceramic foaming silicon rubber valve core and a ceramic foaming polyolefin valve core.

Has the advantages that: the utility model discloses a case of thermal expansion material, the temperature of being heated when the case surpasss a definite value after automatic beginning inflation, do not need other extra start signal or effort, the medium passageway is closed in the automatic inflation, and then the effect that the medium passes through is blocked in the realization, simple structure and reliability are high, can extensively be arranged in like natural gas, toxic gas and special gas supply system, but self-closing prevents to leak or combustion-supporting taking place the conflagration.

Drawings

FIG. 1 is a schematic structural diagram of a straight columnar thrombus type temperature-control fireproof expansion valve;

FIG. 2 is a right side view A-A of FIG. 1;

FIG. 3 is a schematic structural diagram of a straight columnar thrombus type temperature-control fireproof expansion valve in a closed state;

FIG. 4 is a schematic structural diagram of a spherical thrombus type temperature-controlled fireproof expansion valve;

fig. 5 is a schematic structural diagram of a spherical thrombus type temperature-control fireproof expansion valve in a closed state.

Detailed Description

The present invention will be further clarified by the following embodiments with reference to the attached drawings, which are implemented on the premise of the technical solution of the present invention, and it should be understood that these embodiments are only used for illustrating the present invention and are not used for limiting the scope of the present invention.

As shown in fig. 1 to 5, the embodiment of the utility model provides a thrombus formula control by temperature change fire prevention expansion valve, including valve body 1 and case 2, wherein, case 1 preferably adopts the metal valve body, for example stainless steel valve body, cast iron valve body and copper valve body, also can adopt the valve body of ceramic valve body or other high temperature resistant, high strength material, and valve body 1 mainly provides outside mechanical support and valve and pipeline's connection function to can restrict case 2's appearance. The inside of the valve body 1 is hollow, the outer side of the valve core 2 is kept in fit with the inner side of the valve body 1, the valve core 2 is internally provided with a medium channel 3, materials such as soluble inorganic salt and soluble thermoplastic organic matters are adopted as supports in the forming process of the medium channel 3 in the forming process, after the valve core 2 is solidified and formed, the valve core 2 is immersed in a solvent which is soluble in the supports and insoluble in the material of the valve core 2, the supports in the valve core 2 are dissolved out, and then the medium channel 3 in the valve core 2 is formed. The valve body 1 is provided with a medium inlet 4 and a medium outlet 5 at the positions corresponding to the two ends of the medium channel 3, and the valve body 1 at the positions of the medium inlet 4 and the medium outlet 5 is provided with a connecting structure connected with a medium pipeline. The valve core 2 is a valve core subject to thermal expansion, the valve core 2 can be made of inorganic expansion plugging materials such as expanded cement, fly ash and the like, more preferably a ceramic foaming high-molecular valve core such as ceramic foaming silicone rubber, ceramic foaming polyolefin and the like, and other high-temperature-resistant materials capable of thermal expansion can be adopted, when the heating temperature of the valve core 2 exceeds a certain value, the valve core automatically begins to expand without other additional starting signals or acting forces, the valve core 2 expands inwards according to the characteristic of thermal expansion of the valve core, and then a medium channel 3 in the valve core 2 is gradually sealed, and the sealed valve core is shown in figures 3 and 5, so that the medium is blocked from passing. Generally, the expansion sealing temperature of the valve core 2 can be 80 ℃ to 250 ℃ according to the use position and the requirement, and different materials can be selected according to different expansion sealing temperatures. In addition, the valve core can bear the temperature of 400-1000 ℃ or even higher after being expanded, so that the blocked gas pipeline still has a good sealing effect at high temperature, the closed state of the gas pipeline can be always kept, and the shape of the valve body 1 is kept intact at the temperature of 400-1000 ℃.

The utility model discloses case 2 of embodiment can set to hollow straight cylinder form, curved cylinder, spheroid or other irregular shapes as required, and the appearance of valve body 1 is preferred the same with case 2. Different connection structures can be selected according to different shapes of the valve body 1 to be connected with the medium pipeline, and by taking a straight columnar valve body as an example, external thread structures can be arranged at two ends of the valve body 1 so as to be connected with the medium pipeline in a threaded manner, and flanges can be welded at two ends of the valve body 1 respectively so as to be connected with the medium pipeline in a flange manner. Taking the spherical valve body 1 as an example, an adapter tube 6 can be welded to the valve body 1 at the medium inlet 4 and the medium outlet 5, and then the adapter tube 6 is connected with the medium pipeline by a thread or a flange. The medium channel 3 in the valve core 2 can be designed into various shapes such as a straight pipe, a bent pipe, a spiral pipe and the like according to specific use conditions, the expansion performance and the fire-proof performance of materials.

For the convenience of making, the utility model discloses valve body 1 includes that two can dismantle the branch valve bodies of connection, and two divide a plurality of connecting plates of valve body adjacent one end outside accessible welding, then connecting plate bolted connection is fixed, preferably adopts threaded connection, sets up matched with helicitic texture at two adjacent one ends of branch valve body promptly. The utility model discloses a specific manufacture process as follows:

example 1:

as shown in fig. 1, the valve body 1 is a stainless steel valve body having a straight cylindrical shape and the valve body 2 is a straight cylindrical shape. (1) The valve body 1 is divided into two semi-cylindrical sub valve bodies by stainless steel materials and is respectively processed and molded; (2) the middle valve core 2 is molded and vulcanized by adopting a porcelainized foaming polymer material, the medium channel 3 in the valve core 2 is formed by adopting an inner thin cylindrical mold, and the thin cylindrical inner mold is drawn out after vulcanization to form the medium channel 3; (3) the valve core 2 is placed into the two semi-cylindrical branch valve bodies, and the two semi-cylindrical branch valve bodies are connected in a threaded mode to obtain the cylindrical valve.

Example 2:

as shown in fig. 4, the valve body 1 is a spherical copper valve body, and the valve body 2 is spherical. (1) Respectively processing and molding a part of the valve body 1 into two hemispherical sub valve bodies by using a metal copper material; (2) the middle valve core 2 is molded by adopting inorganic expansion plugging material, a core material formed by pressing sodium chloride is placed in a medium channel position with an inner curve, after the inorganic expansion plugging material is cured and molded, the valve core 2 is placed in water, and the inner sodium chloride core material is dissolved to obtain the prepared valve core 2; (3) the valve core 2 is placed into two hemispherical valve bodies, and the two hemispheres are connected in a threaded mode to obtain the spherical valve.

The above description is only a preferred embodiment of the present invention, and it should be noted that other parts not specifically described belong to the prior art or the common general knowledge to those skilled in the art. Without departing from the principle of the present invention, several improvements and decorations can be made, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims (9)

1. The thrombus type temperature-control fireproof expansion valve is characterized by comprising a hollow valve body and a valve core, wherein the valve core is attached to the inner side of the valve body, a medium channel is arranged in the valve core, medium inlets and medium outlets are respectively arranged at positions, corresponding to the two ends of the medium channel, on the valve body, the valve core is a thermally expanded valve core, and the medium channel can be sealed by the valve core in a thermally expanded state so as to block a medium from passing through.

2. The thrombus type temperature-control fireproof expansion valve according to claim 1, wherein the valve body is a metal valve body or a ceramic valve body.

3. The thrombotic temperature-controlled fire-proof expansion valve according to claim 2, wherein the metal valve body comprises a stainless steel valve body, a cast iron valve body and a copper valve body.

4. The thrombus type temperature-control fireproof expansion valve according to claim 2, wherein the valve core comprises a ceramifiable foamed polymer valve core or an inorganic expansion plugging material valve core, and the valve core is hollow in a straight cylinder shape, a bent cylinder shape or a sphere shape.

5. The thrombotic, temperature-controlled, fire-proof expansion valve according to claim 1, wherein the medium channel is in the form of a straight tube, a bent tube or a spiral tube.

6. The thrombotic temperature-controlled fire-proof expansion valve according to claim 1, wherein the valve body comprises two detachably connected sub-valve bodies.

7. The thrombotic temperature-controlled fire-proof expansion valve according to claim 1, wherein the expansion sealing temperature of the valve core is 80 ℃ to 250 ℃, and the valve core can withstand the temperature after the expansion sealing is 400 ℃ to 1200 ℃.

8. The thrombotic temperature-controlled fire-proof expansion valve according to claim 6, wherein the two sub-valve bodies are connected by screw thread.

9. The thrombus type temperature-control fireproof expansion valve according to claim 4, wherein the ceramic foaming polymer valve core comprises a ceramic foaming silicon rubber valve core and a ceramic foaming polyolefin valve core.

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