CN220228768U - Double-piston gas circuit flow switch - Google Patents

Abstract

The utility model is applicable to the technical field of gas flow metering, and discloses a double-piston gas circuit flow switch which comprises a connecting seat, a first connecting port and a second connecting port, wherein the two ends of the connecting seat are respectively provided with an air inlet hole and an air outlet hole, the first connecting port is fixedly arranged at the air inlet hole, the second connecting port is fixedly arranged at the air outlet hole, sealing grooves are formed in the surfaces of the two inner sides of the connecting seat, a sliding column is arranged in the connecting seat, a cage-shaped pipeline is fixedly arranged on one side of the sliding column, and arc-shaped fixing blocks are fixedly arranged at the two ends of the surface of the sliding column. According to the utility model, when the gas flow is larger or smaller than the interval of limiting the gas flow, the sliding column can automatically plug the first connection port or the second connection port, so that the gas flow can be effectively controlled, and the overtemperature risk caused by circuit conduction in the gas state without gas and low pressure can be effectively prevented, and the stable connection of the circuit is realized.

Description

Double-piston gas circuit flow switch

Technical Field

The utility model is suitable for the technical field of gas flow metering, and particularly relates to a double-piston gas circuit flow switch.

Background

The gas circuit flow switch is mainly arranged in the gas pipeline in an on-line or plug-in mode to monitor the gas flow in the gas system. When the gas flow is higher than or lower than a certain set point, triggering output alarm signals to be transmitted to the unit, and after the system acquires the signals, corresponding indication actions can be made. Avoiding or reducing host damage;

the conventional control of gas circulation is realized manually by a button switch, and a circuit is conducted when the button switch is pressed down, so that no matter whether gas passes through or not, the circuit is conducted, in the process of instantaneously heating the gas, the surface heat of a high-resistance electrothermal alloy heating wire cannot be timely transferred in the state of no circulating compressed gas or too small pressure compressed gas, the temperature can reach about 400 ℃, and plastic and a sealing ring connected with the high-resistance electrothermal alloy are damaged, so that the problem existing in the process is solved.

Disclosure of Invention

According to the double-piston gas circuit flow switch provided by the utility model, the sliding column, the cage-shaped pipeline and the telescopic rod are arranged in the connecting seat, so that the sliding column is connected with the telescopic rod, and the reset spring is sleeved on the surface of the telescopic rod, thereby solving the problems in the background art.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a double-piston gas circuit flow switch, includes connecting seat, first connecting port and second connecting port, inlet port and venthole have been seted up respectively at the connecting seat both ends, first connecting port fixed mounting is in inlet port department, and the interior passageway of first connecting port matches unanimously with the size of inlet port, second connecting port fixed mounting is in venthole department, and the interior passageway of second connecting port matches unanimously with the size of outlet port, the inside both sides surface of connecting seat all is equipped with the seal groove, connecting seat internally mounted has the traveller, traveller one side fixed mounting has cage pipeline, the equal fixed mounting in traveller surface both ends has the arc fixed block.

Preferably, telescopic rods are fixedly installed at two ends of one side surface inside the connecting seat, return springs are sleeved on two surfaces of the telescopic rods, stop blocks are fixedly installed at the moving ends of the telescopic rods, and one ends of the return springs are fixedly installed on one side of the stop blocks respectively.

Preferably, the fixed rings are fixedly installed at two ends of the connecting seat, the sealing rings are fixedly installed at one sides of the fixed rings, the sealing rings are matched and consistent with the two sealing grooves in size, and the rubber sealing rings are fixedly installed at one sides of the sealing rings.

Preferably, the two arc-shaped fixing blocks are fixedly installed with the two stop blocks respectively, and one ends of the two arc-shaped fixing blocks are clung to the inner wall of the connecting seat.

Preferably, the size of the cage-shaped pipeline is matched with that of the air outlet hole, and one end of the cage-shaped pipeline extends into the second connecting port.

Compared with the prior art, the utility model has the beneficial effects that:

according to the double-piston gas circuit flow switch, the sliding column, the cage-shaped pipeline and the telescopic rod are arranged in the connecting seat, so that the sliding column is connected with the telescopic rod, the reset spring is sleeved on the surface of the telescopic rod, the flow switch can transmit gas between limited gas flows, when the gas flow is larger than or smaller than a region of limited gas flow, the sliding column can automatically plug the first connecting port or the second connecting port, the flow of the gas can be effectively controlled, and the overtemperature risk caused by circuit conduction under the condition of no gas and low-pressure gas can be effectively prevented, so that stable connection of the circuit is realized.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a dual-piston gas circuit flow switch according to the present utility model;

FIG. 2 is a schematic diagram of the whole structure of a spool of a dual-piston gas circuit flow switch according to the present utility model;

fig. 3 is a schematic diagram of the internal structure of a connection seat of a dual-piston air path flow switch according to the present utility model.

In the figure: 1. a connecting seat; 2. a first connection port; 3. a second connection port; 4. an air inlet hole; 5. an air outlet hole; 6. sealing grooves; 7. a spool; 8. a cage-shaped pipe; 9. an arc-shaped fixed block; 10. a telescopic rod; 11. a return spring; 12. a stop block; 13. a fixing ring; 14. and (3) a sealing ring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "disposed" are to be construed broadly, and may be fixedly connected, disposed, or detachably connected, disposed, or integrally connected, disposed, for example; the types of the electric appliances provided in the present utility model are just references, and the specific meanings of the above terms in the present utility model can be understood by those skilled in the art according to specific situations by replacing different types of electric appliances having the same functions according to actual use situations.

Referring to fig. 1-3, a double-piston gas circuit flow switch comprises a double-piston gas circuit flow switch, which comprises a connecting seat 1, a first connecting port 2 and a second connecting port 3, wherein two ends of the connecting seat 1 are respectively provided with an air inlet hole 4 and an air outlet hole 5, the first connecting port 2 is fixedly installed at the air inlet hole 4, the inner channel of the first connecting port 2 is matched with the size of the air inlet hole 4, the second connecting port 3 is fixedly installed at the air outlet hole 5, the inner channel of the second connecting port 3 is matched with the size of the air outlet hole 5, sealing grooves 6 are respectively arranged on two side surfaces of the inner portion of the connecting seat 1, a sliding column 7 is installed inside the connecting seat 1, a cage-shaped pipeline 8 is fixedly installed on one side of the sliding column 7, and arc-shaped fixing blocks 9 are fixedly installed at two ends of the surface of the sliding column 7.

Referring to fig. 1 and 3, in this embodiment, two ends of a side surface inside the connection seat 1 are fixedly provided with telescopic rods 10, two surfaces of the telescopic rods 10 are respectively sleeved with a return spring 11, two moving ends of the telescopic rods 10 are fixedly provided with a stop block 12, one ends of the return springs 11 are respectively and fixedly provided with one side of the stop block 12, and when the flow switch is not used, the air inlet holes 4 can be blocked, so that the next use is facilitated.

Referring to fig. 1 and 2, two ends of the connecting seat 1 are fixedly provided with fixing rings 13, one sides of the fixing rings 13 are fixedly provided with sealing rings 14, the two sealing rings 14 are matched and consistent with the two sealing grooves 6 in size, one sides of the two sealing rings 14 are fixedly provided with rubber sealing rings, and gas is prevented from flowing out of the gap when the air inlet hole 4 or the air outlet hole 5 is plugged.

In this embodiment, referring to fig. 1, two arc-shaped fixing blocks 9 are respectively and fixedly installed with two stoppers 12, and one ends of the two arc-shaped fixing blocks 9 are respectively and tightly attached to the inner wall of the connecting seat 1, so that when the gas pipeline is closed, the sliding column 7 is moved to the air inlet 4.

Referring to fig. 1 and 2 in this embodiment, the size of the cage-shaped pipe 8 is matched with that of the air outlet 5, and one end of the cage-shaped pipe 8 extends into the second connection port 3, so that air can flow conveniently.

The utility model is used when: the connecting seat 1, the first connecting port 2 and the second connecting port 3 are connected into the gas pipeline, the first connecting port 2 is connected with the air inlet end, the second connecting port 3 is connected with the air outlet end, then a switch of the gas pipeline is opened, when gas flows into the connecting seat 1 from the first connecting port 2, if the flowing pressure of the gas is smaller than a set point interval, the air inlet hole 4 is blocked by the sliding column 7, the gas cannot circulate, when the flowing pressure of the gas is enabled to be in the set point interval, the gas pushes the sliding column 7 to move, meanwhile, the gas flows around the sliding column 7, then flows out through the cage-shaped pipeline 8 and passes through the second connecting port 3, if the flowing pressure of the gas is larger than the set point interval, the gas pushes the sliding column 7 to move right until the sealing ring 14 at one end of the sliding column 7 enters the sealing groove 6 of the connecting seat 1, the gas cannot be discharged, and if the switch of the gas pipeline is closed, the sealing ring 14 at the other end of the sliding column 7 is pushed to move left until the sealing ring 14 at the other end of the sliding column 7 enters the sealing groove 6 at the other side of the connecting seat 1, so that the gas can be used conveniently.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (5)

1. The utility model provides a two piston gas circuit flow switch, includes connecting seat (1), first connecting port (2) and second connecting port (3), its characterized in that, inlet port (4) and venthole (5) have been seted up respectively at connecting seat (1) both ends, first connecting port (2) fixed mounting is in inlet port (4) department, and the inside passageway of first connecting port (2) is unanimous with the size matching of inlet port (4), second connecting port (3) fixed mounting is in venthole (5) department, and the inside passageway of second connecting port (3) is unanimous with the size matching of venthole (5), connecting seat (1) inside both sides surface all is equipped with seal groove (6), connecting seat (1) internally mounted has traveller (7), traveller (7) one side fixed mounting has cage pipeline (8), traveller (7) surface both ends equal fixed mounting have arc fixed block (9).

2. The double-piston gas circuit flow switch according to claim 1, wherein telescopic rods (10) are fixedly installed at two ends of one side surface inside the connecting seat (1), return springs (11) are sleeved on the surfaces of the two telescopic rods (10), stop blocks (12) are fixedly installed at the moving ends of the two telescopic rods (10), and one ends of the two return springs (11) are fixedly installed on one side of each stop block (12).

3. The double-piston gas circuit flow switch according to claim 1, wherein two ends of the connecting seat (1) are fixedly provided with fixing rings (13), one sides of the two fixing rings (13) are fixedly provided with sealing rings (14), the two sealing rings (14) are matched and consistent with the two sealing grooves (6) in size, and one sides of the two sealing rings (14) are fixedly provided with rubber sealing rings.

4. The double-piston gas circuit flow switch according to claim 1, wherein the two arc-shaped fixing blocks (9) are fixedly installed with the two stop blocks (12) respectively, and one ends of the two arc-shaped fixing blocks (9) are tightly attached to the inner wall of the connecting seat (1).

5. A double-piston gas circuit flow switch according to claim 1, wherein the cage-shaped pipeline (8) is matched and consistent with the size of the gas outlet hole (5), and one end of the cage-shaped pipeline (8) extends into the second connecting port (3).