Passive magnetic valve position monitoring device

Abstract

The utility model discloses a passive magnetic valve position monitoring device which comprises a sensing support, a monitoring unit and an induction unit, the monitoring unit and the induction unit are both installed on the sensing support, and the sensing support comprises a first sliding groove part, a second sliding groove part, a reset spring installation seat and an induction installation groove. And the reset spring mounting seat is provided with a moving rod through hole. According to the passive magnetic valve position monitoring device, linkage is carried out through the sensing support, the monitoring unit and the induction unit, so that the valve position state of an electromagnetic valve can be monitored when the electromagnetic valve is opened or closed, it is ensured that the electromagnetic valve is really opened or closed, and the passive magnetic valve position monitoring device has the advantages of being stable in structure, high in practicability, high in safety and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas emergency cut-off solenoid valve position monitoring, and particularly relates to a passive magnetic valve position monitoring device. Background Art

[0002] The gas emergency cut-off solenoid valve is a safety device mainly used in the gas transmission and distribution system to cut off the gas supply when detecting gas leakage or other emergency situations to prevent accidents.

[0003] Many existing gas emergency cut-off solenoid valves lack valve position monitoring devices. After being opened or closed, it is impossible to verify whether they are truly opened or closed, which has certain potential safety hazards.

[0004] Therefore, in view of the above problems, further improvements are made. Summary of the Utility Model

[0005] The main purpose of the utility model is to provide a passive magnetic valve position monitoring device, which is linked through a sensing bracket, a monitoring unit and an induction unit, so as to monitor the valve position state when the solenoid valve is opened or closed, thereby ensuring that it is truly opened or closed. It has the advantages of stable structure, high practicability and high safety.

[0006] To achieve the above object, the utility model provides a passive magnetic valve position monitoring device, including a sensing bracket, a monitoring unit and an induction unit. The monitoring unit and the induction unit are both installed on the sensing bracket, wherein:

[0007] The sensing bracket includes a first chute part, a second chute part, a return spring mounting seat and an induction mounting groove. The return spring mounting seat is provided with a moving rod through hole;

[0008] The monitoring unit includes an integrally formed first sliding rod, a second sliding rod, a moving rod and a magnet mounting groove. The first sliding rod is installed in the first chute part and the second sliding rod is installed in the second chute part. The moving rod is located between the first sliding rod and the second sliding rod and a return spring is sleeved on the moving rod. The bottom end of the return spring abuts against the return spring mounting seat, and a magnet is installed in the magnet mounting groove;

[0009] The induction unit is installed in the induction mounting groove and the induction unit includes an induction circuit board and a reed switch, a transmission wire, a first temperature fuse and a second temperature fuse (used to disconnect at high temperature to cut off the power supply of the induction circuit board) installed on the induction circuit board.

[0010] As a further preferred technical solution of the above technical solution, the first chute portion is provided with a first limiting structure and the second chute portion is provided with a second limiting structure (so that the monitoring unit is stably installed between the first chute portion and the second chute portion to prevent detachment).

[0011] As a further preferred technical solution of the above technical solution, the bottom of the first sliding rod is provided with a first clamping block and the bottom of the second sliding rod is provided with a second clamping block.

[0012] As a further preferred technical solution of the above technical solution, the sensing bracket is provided with a mounting hole (for mounting on the solenoid valve).

[0013] As a further preferred technical solution of the above technical solution, the sensing bracket is provided with reinforcing ribs (to improve the structural strength). Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of the present utility model (open state).

[0015] Figure 2 is a schematic structural diagram of the present utility model (closed state).

[0016] Figure 3 is a schematic structural diagram of the sensing bracket of the present utility model.

[0017] Figure 4 is a schematic structural diagram of the sensing bracket of the present utility model.

[0018] Figure 5 is a schematic structural diagram of the present utility model (hiding the sensing bracket).

[0019] Figure 6 is a cross-sectional view of the present utility model (open state).

[0020] Figure 7 is a cross-sectional view of the present utility model (closed state).

[0021] Reference numerals include: 130, sensing bracket; 131, first chute portion; 1311, first limiting structure; 132, second chute portion; 1321, second limiting structure; 133, return spring mounting seat; 1331, moving rod through hole; 134, induction mounting groove; 140, monitoring unit; 141, first sliding rod; 1411, first clamping block; 142, second sliding rod; 1421, second clamping block; 143, moving rod; 144, magnet mounting groove; 145, return spring; 146, magnet; 150, induction unit; 151, induction circuit board; 152, reed switch; 153, transmission wire; 154, first temperature fuse; 155, second temperature fuse. Detailed Description of the Invention

[0022] The following description is used to disclose the present utility model so that those skilled in the art can implement the present utility model. The preferred embodiments in the following description are only examples, and those skilled in the art can think of other obvious variations. The basic principles defined in the following description of the present utility model can be applied to other implementation schemes, variation schemes, improvement schemes, equivalent schemes, and other technical schemes that do not deviate from the spirit and scope of the present utility model.

[0023] The present utility model discloses a passive magnetic valve position monitoring device. The specific embodiments of the utility model will be further described below in combination with the preferred embodiments.

[0024] In the embodiments of the present utility model, those skilled in the art should note that the solenoid valves and the like involved in the present utility model can be regarded as the prior art.

[0025] Preferred embodiment.

[0026] The present utility model discloses a passive magnetic valve position monitoring device, including a sensing bracket 130, a monitoring unit 140, and an induction unit 150. The monitoring unit 140 and the induction unit 150 are both installed on the sensing bracket 130, wherein:

[0027] The sensing bracket 130 includes a first chute portion 131, a second chute portion 132, a return spring mounting seat 133, and an induction mounting groove 134. The return spring mounting seat 133 is provided with a moving rod through hole 1331;

[0028] The monitoring unit 140 includes an integrally formed first sliding rod 141, a second sliding rod 142, a moving rod 143, and a magnet mounting groove 144. The first sliding rod 141 is installed in the first chute portion 131 and the second sliding rod 142 is installed in the second chute portion 132. The moving rod 143 is located between the first sliding rod 141 and the second sliding rod 142, and a return spring 145 is sleeved on the moving rod 143. The bottom end of the return spring 145 abuts against the return spring mounting seat 133, and a magnet 146 is installed in the magnet mounting groove 144;

[0029] The induction unit 150 is installed in the induction mounting groove 134, and the induction unit 150 includes an induction circuit board 151, a reed switch 152, a transmission wire 153, a first temperature fuse 154, and a second temperature fuse 155 (for disconnecting at high temperature to cut off the power supply of the induction circuit board) installed on the induction circuit board 151.

[0030] Specifically, the first chute portion 131 is provided with a first limiting structure 1311 and the second chute portion 132 is provided with a second limiting structure 1321 (so that the monitoring unit is stably installed between the first chute portion and the second chute portion to prevent detachment).

[0031] More specifically, the bottom of the first sliding rod 141 is provided with a first clamping block 1411 and the bottom of the second sliding rod 142 is provided with a second clamping block 1421 (after being in place or reset, the first clamping block and the second clamping block respectively abut against the first chute portion and the second chute portion upward, so that the return spring is in a compressed state).

[0032] Furthermore, the sensing bracket is provided with mounting holes (for mounting on the solenoid valve).

[0033] Even further, the sensing bracket is provided with reinforcing ribs (to improve the structural strength).

[0034] Regarding the present utility model:

[0035] When the emergency cut-off solenoid valve cuts off in case of an emergency, its moving shaft drives the valve disc to close the gas through-hole. During the movement of the moving shaft, a downward force is simultaneously applied to the monitoring unit, so that the first sliding rod and the second sliding rod respectively move downward in the first chute and the second chute, and the moving rod moves downward in the moving rod through-hole, so that the return spring is compressed. During the downward movement, the magnet continuously approaches the reed switch. When the distance threshold is reached, the reed switch obtains a signal, as Figure 2 shown, so that the induction circuit board outputs a signal for confirming the closed valve position through the transmission wire. If the valve position is not fully closed, it means that the moving shaft has not moved downward in place, so that the magnet is too far away from the reed switch to be triggered;

[0036] When the solenoid valve is reopened, the moving shaft moves upward, and the valve disc does not block the gas through-hole. Thus, the monitoring unit moves upward and resets under the action of the restoring force of the return spring, so that the magnet moves away from the reed switch, and the reed switch loses the signal. Thus, the induction circuit board outputs a signal for confirming the opened valve position through the transmission wire, as Figure 1 shown. If the valve position is not fully opened, it means that the moving shaft has not moved upward in place, so that the magnet is too close to the reed switch to lose the signal.

[0037] It is worth mentioning that the technical features such as the solenoid valve involved in the patent application of the present utility model should be regarded as the prior art. For the specific structures, working principles, and possible control methods and spatial layout methods involved in these technical features, conventional selections in the art can be adopted, and they should not be regarded as the inventive points of the patent of the present utility model. The patent of the present utility model will not be further specifically elaborated.

[0038] For those skilled in the art, it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A passive magnetic valve position monitoring device, characterized in that, It includes a sensing bracket, a monitoring unit and an induction unit. The monitoring unit and the induction unit are both installed on the sensing bracket, where: The sensing bracket includes a first chute portion, a second chute portion, a return spring mounting seat and an induction mounting groove. The return spring mounting seat is provided with a moving rod through hole; The monitoring unit includes an integrally formed first sliding rod, a second sliding rod, a moving rod and a magnet mounting groove. The first sliding rod is installed in the first chute portion and the second sliding rod is installed in the second chute portion. The moving rod is located between the first sliding rod and the second sliding rod and a return spring is sleeved on the moving rod. The bottom end of the return spring abuts against the return spring mounting seat, and a magnet is installed in the magnet mounting groove; The induction unit is installed in the induction mounting groove and the induction unit includes an induction circuit board and a reed switch, a transmission wire, a first temperature fuse and a second temperature fuse installed on the induction circuit board.

2. The passive magnetic valve position monitoring device according to claim 1, characterized in that, The first chute portion is provided with a first limiting structure and the second chute portion is provided with a second limiting structure.

3. The passive magnetic valve position monitoring device according to claim 2, characterized in that, The bottom of the first sliding rod is provided with a first clamping block and the bottom of the second sliding rod is provided with a second clamping block.

4. The passive magnetic valve position monitoring device according to claim 3, wherein, The sensing bracket is provided with a mounting hole.

5. The passive magnetic valve position monitoring device according to claim 4, characterized in that, The sensing bracket is provided with a reinforcing rib.

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