CN111649234A

CN111649234A - Fire valve, fire gas cylinder and inflation system

Info

Publication number: CN111649234A
Application number: CN202010641356.9A
Authority: CN
Inventors: 侯兴锋; 李俊彬; 吴孟南; 姜华雄; 王书盼; 毛利君
Original assignee: Jiangshan Brilliant Fire Technology Co ltd; Polygon Beijing Energy Technology Co ltd
Current assignee: Jiangshan Brilliant Fire Technology Co ltd; Polygon Beijing Energy Technology Co ltd
Priority date: 2020-07-06
Filing date: 2020-07-06
Publication date: 2020-09-11

Abstract

The invention discloses a fire valve, a fire gas bottle and an inflation system, wherein the fire valve comprises a valve shell, a valve core arranged in the valve shell and a charging limiting device, and the charging limiting device comprises: the piston is arranged in the air inlet channel, a resisting part is arranged in the air inlet channel, one end of the piston, which is close to the valve core, is abutted against the resisting part to block a vent hole in the middle of the resisting part, and when a gap is formed between one end of the piston, which is close to the valve core, and the resisting part, the air inlet channel is in a conducting state; the limiting assembly can limit the piston to move towards the direction close to the valve core. The structural design of the fire valve can effectively prevent the cross filling of a plurality of manufacturers or private persons.

Description

Fire valve, fire gas cylinder and inflation system

Technical Field

The invention relates to the technical field of fire fighting equipment, in particular to a fire fighting valve, a fire fighting gas cylinder and an inflation system.

Background

Heptafluoropropane (HFC-227ea, FM-200) is colorless, tasteless, non-conductive, no secondary pollution gas, it has clean, low toxicity, good electrical insulation, high efficiency of fire extinguishing, especially it has no destruction to the ozone layer, the residual time in the atmosphere is shorter, its environmental protection performance is obviously superior to alkyl halide, it is a more successful clean gas fire extinguishing agent studied and developed so far, therefore the heptafluoropropane fire extinguishing system is widely used in electronic computer rooms, libraries, archives, power distribution rooms, telecommunication centers, underground engineering, etc. which need to be focused on the fire protection places.

The valve and the gas cylinder are required to be inspected in 3 years in the using process of the fire-fighting gas cylinder filled with heptafluoropropane, the gas cylinder and the valve are required to be transported back to a factory by a manufacturer during inspection, the fire extinguishing agent in the gas cylinder is emptied, then the valve is detached, and the valve and the gas cylinder are respectively inspected. After the fire extinguishing agent is qualified, the valve is installed and the fire extinguishing agent is filled, and the fire extinguishing agent is restored to a normal state.

However, there is a phenomenon that the gas cylinders and valves manufactured by one manufacturer are inspected and filled by other manufacturers (including manufacturers and third-party inspection institutions). The cross filling can cause the problems that the filling of the fire extinguishing agent (heptafluoropropane) is uncontrollable, the responsibility after an accident cannot be clearly defined and the like, and brings management confusion and potential safety hazards to gas cylinder and valve manufacturers and using units thereof.

Disclosure of Invention

In view of the above, the first object of the present invention is to provide a fire valve, which is designed to effectively prevent cross-charging of multiple manufacturers or individuals, and the second object of the present invention is to provide a fire cylinder and an inflation system including the fire valve.

In order to achieve the first object, the invention provides the following technical scheme:

the utility model provides a fire control valve, includes the valve casing and set up in case in the valve casing, be provided with the air inlet on the valve casing, the air inlet with inlet channel has between the case, still includes the limit and fills the device, the limit fills the device and includes:

the piston is arranged in the air inlet channel, a resisting part is arranged in the air inlet channel, one end of the piston, which is close to the valve core, is abutted against the resisting part to block a vent hole in the middle of the resisting part, and when a gap is formed between one end of the piston, which is close to the valve core, and the resisting part, the air inlet channel is in a conducting state;

the limiting assembly can limit the piston to move towards the direction close to the valve core.

Preferably, in the fire valve, the limiting assembly includes a housing and a sliding rod disposed in the housing, a guide hole is disposed on the housing, and the sliding rod can slide along the guide hole to an end portion of the sliding rod close to the piston, so that the sliding rod can limit the piston to move toward a direction close to the valve core.

Preferably, in the fire valve, the abutting portion is a tapered hole, and a cross section of the tapered hole is gradually reduced along a direction close to the valve element;

the end part of the piston close to the valve core is in a frustum shape, and the cross section of the frustum shape is gradually reduced along the direction close to the valve core.

Preferably, in the fire valve, the piston includes a central rod, a plug body fixedly connected to the central rod, and a plug head fixedly connected to the central rod, a gap is provided between the plug body and the plug head, and the sliding rod can slide along the guide hole until its end close to the piston extends into the gap between the plug body and the plug head.

Preferably, in the fire valve, the limiting component further comprises a return spring arranged in the guide hole and sleeved outside the sliding rod, one end of the return spring abuts against the sliding rod, and the other end of the return spring abuts against the inner wall of the guide hole.

Preferably, in the fire valve, the sliding rod is made of magnetic metal;

the fire valve further comprises a coil matched with the sliding rod, and the sliding rod is driven to move towards the direction close to the piston under the action of a magnetic field of the coil after the coil is electrified so as to limit the piston to move towards the direction close to the valve core.

Preferably, in the fire valve, the limiting assembly further includes a driving member for driving the sliding rod to slide along the guide hole.

The fire-fighting gas cylinder comprises a gas cylinder body and the fire-fighting valve, wherein the fire-fighting valve is arranged at the opening of the gas cylinder body.

An inflation system, comprising:

according to the fire-fighting gas cylinder, the sliding rod of the fire-fighting valve of the fire-fighting gas cylinder is made of a magnetic metal material;

a coil cooperating with the sliding rod and a power source capable of supplying power to the coil.

Preferably, in the above inflation system, the fire-fighting gas cylinder is provided with an electronic identifier, and the inflation system further includes:

identification means for identifying the electronic identification;

and the controller is used for receiving the information identified by the identification device, judging whether the information identified by the identification device meets the inflation requirement or not, and controlling a power supply to supply power to the coil if the information identified by the identification device meets the inflation requirement.

When the fire valve provided by the embodiment is applied, when other manufacturers or individuals inflate, inflation gas enters the gas inlet channel through the gas inlet, the piston in the gas inlet channel can move towards the direction close to the valve core under the action of the air pressure of the gas flow until one end close to the valve core abuts against the abutting part, at the moment, the piston blocks the vent hole in the middle of the abutting part, the gas inlet channel is in a non-conduction state, gas can not enter the fire-fighting gas bottle through the gas inlet channel, the purpose of limiting the inflation is achieved, the other manufacturers or individuals can be prevented from inflating, and the condition of cross filling is prevented.

When this factory aerifys, start spacing subassembly, spacing subassembly restriction piston removes towards the direction that is close to the case, and spacing subassembly can prevent the piston to remove towards the direction that is close to the case this moment, and when aerifing, gaseous can get into the fire control gas cylinder behind the air vent of inlet channel, support portion.

Therefore, when the fire valve provided by the invention is used, the sliding rod slides along the guide hole, so that the piston can be limited or not limited, the piston can be inflated when the movement of the piston is limited, and the piston cannot be inflated when the movement of the piston is not limited. Therefore, the inflation of other manufacturers or individuals can be prevented, and the cross filling situation is prevented.

In order to achieve the second object, the invention also provides a fire fighting gas cylinder and an inflation system, which comprise any one of the fire fighting valves. Because foretell fire control valve has above-mentioned technological effect, fire control gas cylinder and the system of aerifing that has this fire control valve also should have corresponding technological effect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a fire valve provided in an embodiment of the present invention;

FIG. 2 is a schematic diagram of a fire valve provided in an embodiment of the present invention in a flush limiting state;

fig. 3 is a schematic view of a fire valve provided in an embodiment of the present invention in an unlimited flushing state.

In fig. 1-3:

1-air inlet, 2-air inlet channel, 3-piston, 3 a-plug body, 3 b-central rod, 3 c-plug head, 4-sliding rod, 5-shell, 6-valve shell and 7-reset spring.

Detailed Description

The first purpose of the invention is to provide a fire valve, the structure design of which can effectively prevent the condition of cross-filling of a plurality of manufacturers or private persons, and the second purpose of the invention is to provide a fire cylinder and an inflation system comprising the fire valve.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left" and "right", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the positions or elements referred to must have specific orientations, be constructed in specific orientations, and be operated, and thus are not to be construed as limitations of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1 to 3, the fire valve according to the present invention includes a valve housing 6 and a valve core disposed in the valve housing 6, wherein the valve core operates to open or close the fire valve. An air inlet 1 is arranged on the valve shell 6, and an air inlet channel 2 is arranged between the air inlet 1 and the valve core. When the fire fighting gas bottle is inflated, gas enters the fire fighting gas bottle through the gas inlet 1, the gas inlet channel 2 and the valve core.

The key point is that the fire valve also comprises a charge limiting device, and the charge limiting device comprises a piston 3 and a limiting assembly. Wherein, piston 3 is arranged in intake channel 2, and piston 3 can slide along intake channel 2. The air inlet channel 2 is internally provided with a resisting part which is positioned between the piston 3 and the valve core. The middle of the blocking part is hollow to form a vent hole, one end of the piston 3 close to the valve core is abutted against the blocking part to block the vent hole in the middle of the blocking part, and the air inlet channel 2 is in a non-conduction state at the moment. Namely, when one end of the piston 3 close to the valve core is abutted against the abutting part, the piston can block the vent hole in the middle of the abutting part, and then gas can not enter the fire-fighting gas cylinder through the gas inlet channel 2.

When a gap is formed between one end of the piston 3 close to the valve core and the resisting part, the air inlet channel 2 is in a conducting state. Namely, when one end of the piston 3 close to the valve core is not abutted against the abutting part, the gas can enter the fire-fighting gas cylinder through the gas inlet channel 2.

The limiting assembly can limit the piston 3 to move towards the direction close to the valve core.

When the fire valve provided by the embodiment is applied, when other manufacturers or individuals inflate, inflation gas flows into the gas inlet channel 2 through the gas inlet 1, the piston 3 in the gas inlet channel 2 can move towards the direction close to the valve core under the action of the air pressure of the gas flow until one end close to the valve core is abutted against the abutting part, at the moment, the piston 3 blocks the vent hole in the middle of the abutting part, the gas inlet channel 2 is in a non-conduction state, gas can not enter the fire-fighting gas bottle through the gas inlet channel 2, the purpose of limiting charging is achieved, other manufacturers or individuals can be prevented from inflating, and the condition of cross charging is prevented.

When this factory aerifys, start spacing subassembly, spacing subassembly can prevent the piston 3 orientation to remove near the direction of case this moment, when aerifing, gaseous can get into the fire control gas cylinder behind the air vent of admission passage 2, stop portion.

Therefore, when the fire valve provided by the invention is used, the piston 3 can be inflated when being limited to move by the limiting assembly, and the piston 3 cannot be inflated when not being limited to move. Therefore, the inflation of other manufacturers or individuals can be prevented, and the cross filling situation is prevented.

Preferably, the limiting assembly comprises a housing 5 and a sliding rod 4 arranged in the housing 5, wherein a guide hole is formed in the housing 5, the sliding rod 4 can slide along the guide hole, and the sliding rod 4 is close to or far away from the piston 3 when sliding along the guide hole. The sliding rod 4 can slide along the guide hole to the end thereof near the piston 3, and can restrict the piston 3 from moving toward the direction near the spool. If the end of the slide rod 4 close to the piston 3 is the first end, the first end of the slide rod 4 can slide to the first end of the slide rod 4 to restrict the piston 3 from moving in the direction close to the valve body when the first end of the slide rod 4 slides in the direction close to the piston 3.

When this factory aerifys, start spacing subassembly, make slide bar 4 to the direction slip that is close to piston 3, slide bar 4 slides to the first end restriction piston 3 of slide bar 4 and moves towards the direction that is close to the case, and the limiting displacement of slide bar 4 can prevent that piston 3 moves towards the direction that is close to the case this moment, and when aerifing, gaseous can get into the fire control gas cylinder behind the air vent of inlet channel 2, resistance portion. When the fire valve provided by the invention is used, the sliding rod 4 slides along the guide hole, so that the piston 3 can be limited or not limited, the piston 3 can be inflated when the movement is limited, and the piston 3 cannot be inflated when the movement is not limited. Therefore, the inflation of other manufacturers or individuals can be prevented, and the cross filling situation is prevented.

In a specific embodiment, the abutment is embodied as a tapered bore, and the cross section of the tapered bore is gradually reduced in a direction close to the spool. So set up, the one end that piston 3 is close to butt portion moves along the taper hole, offsets until piston 3 and the inner wall of taper hole, and then can the shutoff taper hole.

In the above embodiment, the end of the piston 3 close to the valve element is in the shape of a frustum, and the cross section of the frustum gradually decreases in the direction close to the valve element. Thus, the frustum shape is more matched with the taper hole.

The frustum shape and the taper hole may be both a truncated cone shape or a truncated pyramid shape, and are not limited herein.

The end of the piston 3 near the valve body may have other shapes such as a square shape and a cylindrical shape, and is not limited herein.

The abutting portion may be an annular protrusion, which is not limited herein.

In another embodiment, the piston 3 comprises a central rod 3b, a plug body 3a fixedly connected to the central rod 3b and a plug head 3c fixedly connected to the central rod 3 b. The plug 3c is disposed closer to the abutment portion than the plug body 3 a.

As shown in fig. 3, there is a gap between the plug body 3a and the plug head 3c, and the slide rod 4 can slide along the guide hole until its end near the piston 3 protrudes into the gap between the plug body 3a and the plug head 3 c. Namely, the sliding rod 4 slides along the guide hole in the direction close to the piston 3, so that the first end of the piston 3 can slide to extend into the gap between the plug body 3a and the plug head 3c, and at this time, the first end of the piston 3 blocks the plug body 3a, so that the piston 3 can be prevented from moving in the direction close to the valve core, and can be inflated.

The plug body 3a may be provided with a through hole, and the air flow may flow through the through hole of the plug body 3 a. Or a gap is provided between the plug body 3a and the inner wall of the intake passage 2, and the air flow can flow through the gap between the plug body 3a and the inner wall of the intake passage 2.

Of course, the sliding rod 4 may also slide along the guide hole in a direction approaching the piston 3, so that the first end of the piston 3 may slide to tightly push the plug body 3a or the plug head 3c, at this time, the first end of the piston 3 blocks the plug body 3a or the plug head 3c, and further, the piston 3 may be prevented from moving in a direction approaching the valve element, and may be inflated.

For convenience of manufacture, the housing 5 and the valve housing 6 may be of an integral structure, and are not limited herein.

Preferably, the limiting assembly further comprises a return spring 7 which is arranged in the guide hole and sleeved on the outer side of the sliding rod 4, one end of the return spring 7 abuts against the sliding rod 4, and the other end of the return spring abuts against the inner wall of the guide hole. All be provided with the butt arch on the inner wall of guiding hole and the slide bar 4, reset spring 7's both ends respectively with the inner wall of guiding hole and the protruding counterbalance of butt on the slide bar 4. The action of the return spring 7 enables the first end of the sliding rod 4 to be separated from the piston 3 to return the fire valve to a charge-limited state. When the inflation is finished, other external force disappears, the elastic force of the return spring 7 drives the sliding rod 4 to move towards the direction away from the piston 3, so that the first end of the sliding rod 4 is separated from the piston 3, and the fire valve returns to the inflation limiting state.

Further, the material of the slide rod 4 may be a magnetic metal material. The fire valve further comprises a coil matched with the sliding rod 4, and after the coil is electrified, the magnetic field of the coil drives the sliding rod 4 to move towards the direction close to the piston 3 so as to limit the piston 3 to move towards the direction close to the valve core. That is, after the coil is energized, the slide rod 4 is magnetically moved in the magnetic field in a direction approaching the piston 3, and the first end of the slide rod 4 restricts the movement of the piston 3 in a direction approaching the valve body.

When the coil is de-energized, the magnetic field disappears, and the first end of the sliding rod is separated from the piston 3 by the action of the return spring 7, so that the fire valve returns to the charge-limiting state.

In the above embodiment, the sliding rod 4 may be an iron core, and the coil may be disposed on the fire valve or other devices, and it is sufficient to match the fire valve with other devices when the fire valve is inflated.

The sliding rod 4 can also be an aluminum core or other core body made of non-ferromagnetic metal, and the coil can be arranged on other equipment or the fire valve. When the coil is arranged on other equipment, the fire valve can be matched with other equipment when the fire valve is inflated, and preferably, when the sliding rod 4 is a core body made of other non-ferromagnetic metal materials, the sliding rod is arranged on other equipment so as to design the volume of the coil.

Of course, the limiting assembly may further include a driving member for driving the sliding rod 4 to slide along the guide hole.

The driving member may be a motor or a cylinder. Alternatively, the driving member may be a worm gear mechanism, etc., and is not limited herein.

Based on the fire valve provided in the above embodiment, the invention also provides a fire-fighting gas cylinder, which comprises a gas cylinder body and any one of the fire valves in the above embodiments. Because the fire valve in the above embodiment is adopted in the fire fighting gas cylinder, please refer to the above embodiment for the beneficial effects of the fire fighting gas cylinder.

The invention also provides an inflation system which comprises any one of the fire-fighting gas cylinders, wherein the sliding rod 4 of the fire-fighting valve of the fire-fighting gas cylinder is made of a magnetic metal material. The above-mentioned inflation system also comprises a coil cooperating with the sliding rod 4 and a power source able to supply power to the coil. When the inflation system works, inflation or limited inflation is realized by controlling the on-off of the power supply and the coil. When the power supply supplies power to the coil, the sliding rod 4 can move towards the direction close to the piston 3 under the action of magnetic force in the magnetic field, and then the first end of the sliding rod 4 limits the piston 3 to move towards the direction close to the valve core. When the power supply stops supplying power to the coil, the magnetic field disappears, and the fire valve can return to the charging limiting state.

In the above embodiments, the coil may be located on the fire valve or on other equipment. Where the other device may be an inflatable device.

Further, in order to realize automatic operation, be provided with electronic identification on the fire control gas cylinder, the producer of fire control gas cylinder can be confirmed through electronic identification's information. The inflation system further comprises an identification device and a controller. The recognition device is used for recognizing the electronic mark. The controller is used for receiving the information identified by the identification device, judging whether the information identified by the identification device meets the inflation requirement or not, and controlling the power supply to supply power to the coil if the information identified by the identification device meets the inflation requirement.

In the above embodiment, the information identified by the identification device may be the manufacturer of the fire-fighting gas cylinder or the internal charging type, and is not limited herein.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Claims

1. The utility model provides a fire control valve, include valve casing (6) and set up in case in valve casing (6), be provided with air inlet (1) on valve casing (6), air inlet (1) with inlet channel (2) have between the case, its characterized in that still includes the limit and fills the device, the limit fills the device and includes:

the piston (3) is arranged in the air inlet channel (2), a resisting part is arranged in the air inlet channel (2), a vent hole in the middle of the resisting part is blocked when one end, close to the valve core, of the piston (3) is in butt joint with the resisting part, and when a gap is formed between one end, close to the valve core, of the piston (3) and the resisting part, the air inlet channel (2) is in a conducting state;

the limiting assembly can limit the piston (3) to move towards the direction close to the valve core.

2. A fire valve as claimed in claim 1, wherein the position limiting assembly comprises a housing (5) and a sliding rod (4) arranged in the housing (5), a guide hole is arranged on the housing (5), and the sliding rod (4) can slide along the guide hole to the end part close to the piston (3) to limit the piston (3) to move towards the direction close to the valve core.

3. A fire valve according to claim 2, characterised in that the piston (3) comprises a central rod (3b), a plug body (3a) fixedly connected with the central rod (3b) and a plug head (3c) fixedly connected with the central rod (3b), and a gap is provided between the plug body (3a) and the plug head (3c), and the sliding rod (4) can slide along the guide hole until its end near the piston (3) protrudes into the gap between the plug body (3a) and the plug head (3 c).

4. A fire valve as claimed in claim 2, wherein the position limiting component further comprises a return spring (7) disposed in the guide hole and sleeved outside the sliding rod (4), one end of the return spring (7) abuts against the sliding rod (4) and the other end abuts against the inner wall of the guide hole.

5. A fire valve as claimed in claim 4, characterised in that the sliding rod (4) is of magnetic metal;

the fire valve further comprises a coil matched with the sliding rod (4), and the sliding rod (4) is driven to move towards the direction close to the piston (3) under the action of a magnetic field of the coil after the coil is electrified so as to limit the piston (3) to move towards the direction close to the valve core.

6. A fire valve as claimed in claim 2, wherein the stop assembly further comprises a drive member for driving the sliding rod (4) to slide along the guide bore.

7. A fire valve as recited in claim 1, wherein the stop is a tapered bore having a cross-section that decreases in a direction toward the valve element;

the end part of the piston (3) close to the valve core is in a frustum shape, and the cross section of the frustum shape is gradually reduced along the direction close to the valve core.

8. A fire fighting gas cylinder comprising a gas cylinder body and a fire fighting valve according to any one of claims 1 to 7, said fire fighting valve being disposed at the mouth of said gas cylinder body.

9. An inflation system, comprising:

the fire fighting gas cylinder according to claim 8, wherein the sliding rod (4) of the fire fighting valve of the fire fighting gas cylinder is made of magnetic metal;

a coil cooperating with the sliding rod (4) and a power source capable of supplying power to the coil.

10. The inflation system of claim 9, wherein the fire-fighting gas cylinder has an electronic identifier disposed thereon, the inflation system further comprising:

identification means for identifying the electronic identification;