CN215334598U - Pressure-adjustable low-temperature safety valve - Google Patents
Pressure-adjustable low-temperature safety valve Download PDFInfo
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- CN215334598U CN215334598U CN202120752954.3U CN202120752954U CN215334598U CN 215334598 U CN215334598 U CN 215334598U CN 202120752954 U CN202120752954 U CN 202120752954U CN 215334598 U CN215334598 U CN 215334598U
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Abstract
The utility model discloses a pressure adjustable low-temperature safety valve, which comprises a hemispherical valve, wherein an extension part is arranged at the outlet end of the hemispherical valve, a mounting seat and a pressure switch mechanism are fixed on the extension part, a one-way electromagnetic valve is arranged in the mounting seat and communicated with the inside of the extension part, a compressed air tank is connected on a connector of the mounting seat, the pressure switch mechanism comprises a shell with a mounting cavity and a microswitch, the device comprises an inductor, a spring and a spring seat, wherein a microswitch is arranged in a switch chamber on one side of an installation cavity, a one-way electromagnetic valve is connected with a power supply through the microswitch, the switch chamber is connected with the lower end of the installation cavity through a hole, a trigger ball is connected in the hole in a left-right moving mode, two sides of the trigger ball are protruded out of holes, and one side, facing the switch chamber, of the trigger ball is abutted to a switch of the microswitch.
Description
Technical Field
The utility model relates to a pressure-adjustable low-temperature safety valve.
Background
The hemispherical valve is often used as a safety valve on a gas and liquid conveying pipeline, and when a low-temperature medium is conveyed, the low-temperature medium is easy to exchange heat with air in a pipeline on the other side of the hemispherical valve due to a certain temperature difference between two sides of the hemispherical valve, so that the air pressure in the pipeline is reduced, and the medium at the end part of the pipeline and in a container flows backwards.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provides a pressure-adjustable low-temperature safety valve.
The technical scheme of the utility model is as follows: a pressure-adjustable low-temperature safety valve comprises a hemispherical valve, wherein an extension part is arranged at the outlet end of the hemispherical valve, a mounting seat and a pressure switch mechanism are fixed on the extension part, a one-way electromagnetic valve is arranged in the mounting seat and communicated with the inside of the extension part, and a compressed air tank is connected to a connector of the mounting seat;
the pressure switch mechanism comprises a shell with an installation cavity, a micro switch, an inductor, a spring and a spring seat, wherein one end of the shell is an open end and is in sealing connection with an installation hole in the extension part, the inductor is inserted into the installation cavity, one end of the inductor is provided with a bowl-shaped inductor main body, the concave surface of the inductor main body is arranged towards the opening of the shell, the periphery of the inductor main body is also provided with a circle of graphite ring, the graphite ring is abutted against the inner wall of the installation cavity, the rear end of the inductor is a flat cylinder, the periphery of the cylinder is also fixed with a circle of stainless steel thin ring, and the outer diameter of the stainless steel thin ring corresponds to the inner diameter of the installation cavity;
the mounting cavity is internally provided with a spring channel, the spring seat is arranged at one end of the spring channel far away from the mounting cavity, the spring is arranged in the spring channel, and two ends of the spring are respectively connected to the cylinder and the spring seat;
the utility model discloses a portable electronic device, including installation cavity, micro-gap switch, one-way solenoid valve, switch room and installation cavity lower extreme, micro-gap switch sets up in the switch room of installation cavity one side, one-way solenoid valve is connected with the power through micro-gap switch, be connected through a hole between switch room and the installation cavity lower extreme, it is connected with a trigger ball to control about downthehole, the both sides bulge hole of trigger ball, trigger ball one side towards the switch room and micro-gap switch's switch looks butt.
Specifically, the inductor main body and the cylinder are of an engineering plastic integrated structure.
Furthermore, a connecting ring is arranged on the periphery of the open end of the shell, the end of the open end is inserted into the mounting hole and is flush with the inner wall of the extension part, a fixing ring corresponding to the connecting ring is arranged at the outer end of the mounting hole, the connecting ring is connected with the fixing ring, and a seal is arranged between the connecting ring and the fixing ring.
Further, the mounting seat is arranged at the upper end of the extension part, and the pressure switch mechanism is arranged at the lower end of the extension part.
Further, slide has at downthehole upper and lower both ends, the upper and lower both ends of trigger ball have the slider, slider sliding connection is in the slide that corresponds, the hole still is fixed with an elastic seal membrane towards the one end outside of switch chamber.
The utility model has the beneficial effects that: when the air pressure in the extension part is reduced to a certain degree, the compressed air tank can transmit air to the extension part and the pipeline connected with the extension part to balance the pressure, so that the medium is prevented from flowing backwards.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the pressure switch mechanism of the present invention;
fig. 3 is an enlarged view of a portion a in fig. 2.
Detailed Description
The technical scheme of the utility model is further specifically described by the following embodiments and the accompanying drawings.
As shown in fig. 1, the pressure-adjustable low-temperature safety valve comprises a hemispherical valve 1, wherein an extension part 2 is arranged at the outlet end of the hemispherical valve 1, a mounting seat 3 and a pressure switch mechanism 4 are fixed on the extension part 2, a one-way electromagnetic valve is arranged in the mounting seat 3 and communicated with the inside of the extension part 2, and a compressed air tank 5 is connected to a connector of the mounting seat 3;
specifically, the mounting seat 3 is welded on a corresponding joint of the extension part 2;
as shown in fig. 2, the pressure switch mechanism 4 includes a housing 6 having an installation cavity, a micro switch 7, an inductor 8, a spring 9 and a spring seat 10, wherein one end of the housing 6 is an open end and is hermetically connected with the installation hole on the extension portion 2, the inductor 8 is inserted into the installation cavity, one end of the inductor 8 has a bowl-shaped inductor main body, a concave surface of the inductor main body faces the opening of the housing 6, a circle of graphite ring 11 is further arranged on the periphery of the inductor main body, the graphite ring 11 is abutted to the inner wall of the installation cavity to perform self-lubricating and sealing functions, the rear end of the inductor 8 is a flat cylinder, and the inductor main body and the cylinder are of an engineering plastic integrally molded structure to reduce the dead weight of the inductor 8;
a circle of stainless steel thin ring 12 is further fixed on the periphery of the cylinder, and the outer diameter of the stainless steel thin ring 12 corresponds to the inner diameter of the installation cavity;
a spring channel is arranged in the mounting cavity, the spring seat 10 is arranged at one end of the spring channel far away from the mounting cavity, the spring 9 is arranged in the spring channel, and two ends of the spring 9 are respectively connected to the cylinder and the spring seat 10;
the microswitch 7 is arranged in a switch chamber 13 on one side of the installation cavity, the one-way electromagnetic valve is connected with a power supply through the microswitch 7, the switch chamber 13 is connected with the lower end of the installation cavity through a hole, a trigger ball 14 is connected in a manner of moving left and right in the hole, holes protrude from two sides of the trigger ball 14, and one side, facing the switch chamber 13, of the trigger ball 14 is abutted against a switch of the microswitch 7;
when a low-temperature medium is positioned at one side of the hemispherical valve 1 and exchanges heat with air in the extension part 2 to cause the pressure in the extension part 2 to be low, because the hemispherical valve 1 is in a closed state and the pipeline connected with the extension part 2 is also in a liquid seal state, the inductor 8 can displace towards the opening direction under the action of negative pressure, the thin stainless steel ring 12 pushes the trigger ball 14 in the displacement process, so that the trigger ball 14 presses the switch of the microswitch 7, the microswitch 7 opens the one-way electromagnetic valve, and the compressed air tank 5 inputs air into the extension part 2 and the pipeline; when the extension part 2 and the pressure in the pipeline return to normal, the inductor 8 resets under the action of the spring 9, and the microswitch 7 is closed; thus, the medium in the pipeline in the direction of the extension part 2 can be effectively prevented from flowing backwards;
furthermore, a connecting ring 15 is arranged on the periphery of the open end of the shell 6, the end of the open end is inserted into the mounting hole and is flush with the inner wall of the extension part 2, a fixing ring corresponding to the connecting ring 15 is arranged at the outer end of the mounting hole, the connecting ring 15 is connected with the fixing ring, and a seal is arranged between the connecting ring 15 and the fixing ring; the structure enables the installation and the fixation of the pressure switch structure to be more convenient, and the sealing reliability of the connection part of the shell 6 and the extension part 2 is high, thereby avoiding the leakage;
further, the mounting seat 3 is provided at the upper end of the extension portion 2 so as to periodically replace the compressed air tank 5, and the pressure switch mechanism 4 is provided at the lower end of the extension portion 2;
as shown in fig. 3, the upper end and the lower end in the hole are provided with slide ways 16, the upper end and the lower end of the trigger ball 14 are provided with slide blocks 17, and the slide blocks 17 are slidably connected in the corresponding slide ways 16, so that the left-right displacement of the trigger ball 14 is smoother; an elastic sealing film 18 is further fixed on the outer side of one end of the hole facing the switch chamber 13, so that a medium is prevented from entering the switch chamber 13 when liquid leakage occurs in the installation cavity, and the trigger ball 14 is limited and reset.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. The utility model provides an adjustable cryogenic safety valve of pressure, includes the hemisphere valve, its characterized in that: an extension part is arranged at the outlet end of the hemispherical valve, a mounting seat and a pressure switch mechanism are fixed on the extension part, a one-way electromagnetic valve is arranged in the mounting seat and communicated with the inside of the extension part, and a compressed air tank is connected to a connector of the mounting seat;
the pressure switch mechanism comprises a shell with an installation cavity, a micro switch, an inductor, a spring and a spring seat, wherein one end of the shell is an open end and is in sealing connection with an installation hole in the extension part, the inductor is inserted into the installation cavity, one end of the inductor is provided with a bowl-shaped inductor main body, the concave surface of the inductor main body is arranged towards the opening of the shell, the periphery of the inductor main body is also provided with a circle of graphite ring, the graphite ring is abutted against the inner wall of the installation cavity, the rear end of the inductor is a flat cylinder, the periphery of the cylinder is also fixed with a circle of stainless steel thin ring, and the outer diameter of the stainless steel thin ring corresponds to the inner diameter of the installation cavity;
the mounting cavity is internally provided with a spring channel, the spring seat is arranged at one end of the spring channel far away from the mounting cavity, the spring is arranged in the spring channel, and two ends of the spring are respectively connected to the cylinder and the spring seat;
the utility model discloses a portable electronic device, including installation cavity, micro-gap switch, one-way solenoid valve, switch room and installation cavity lower extreme, micro-gap switch sets up in the switch room of installation cavity one side, one-way solenoid valve is connected with the power through micro-gap switch, be connected through a hole between switch room and the installation cavity lower extreme, it is connected with a trigger ball to control about downthehole, the both sides bulge hole of trigger ball, trigger ball one side towards the switch room and micro-gap switch's switch looks butt.
2. A pressure-regulated cryogenic safety valve according to claim 1, wherein: the inductor main body and the cylinder are of an engineering plastic integrated structure.
3. A pressure-regulated cryogenic safety valve according to claim 1, wherein: the outer periphery of the open end of the shell is provided with a connecting ring, the end part of the open end is inserted into the mounting hole and is flush with the inner wall of the extending part, the outer end of the mounting hole is provided with a fixing ring corresponding to the connecting ring, the connecting ring is connected with the fixing ring, and a seal is further arranged between the connecting ring and the fixing ring.
4. A pressure-regulated cryogenic safety valve according to claim 1, wherein: the mounting seat is arranged at the upper end of the extension part, and the pressure switch mechanism is arranged at the lower end of the extension part.
5. A pressure regulated cryogenic safety valve according to any of claims 1 to 4 wherein: the downthehole upper and lower both ends have the slide, the upper and lower both ends of trigger ball have the slider, slider sliding connection is in the slide that corresponds, the hole still is fixed with an elasticity seal membrane towards the one end outside of switch chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120752954.3U CN215334598U (en) | 2021-04-14 | 2021-04-14 | Pressure-adjustable low-temperature safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120752954.3U CN215334598U (en) | 2021-04-14 | 2021-04-14 | Pressure-adjustable low-temperature safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215334598U true CN215334598U (en) | 2021-12-28 |
Family
ID=79593723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120752954.3U Active CN215334598U (en) | 2021-04-14 | 2021-04-14 | Pressure-adjustable low-temperature safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215334598U (en) |
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2021
- 2021-04-14 CN CN202120752954.3U patent/CN215334598U/en active Active
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