Low-voltage stabilizer with overvoltage safety protection device

Abstract

The utility model discloses a low pressure stabilizer with an overpressure safety protection device, which comprises a valve body module, a pressure stabilizing module and an overpressure protection module, the pressure stabilizing module and the overpressure protection module are both installed on the valve body module, the valve body module comprises an input end, an output end, a main through hole and an overpressure protection through hole, the main through hole and the overpressure protection through hole are both located between the input end and the output end. According to the low-voltage stabilizer with the overpressure safety protection device, linkage is conducted through the valve body module, the pressure stabilizing module and the overpressure protection module, so that the amount of gas output by the output end is kept constant and free of fluctuation, the overpressure protection function is achieved, and the low-voltage stabilizer 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 pressure stabilizing valves, and in particular relates to a low-pressure stabilizer with an overpressure safety protection device. Background Art

[0002] The gas valve is a new type of safety device for gas pipeline projects. It is used to cut off, connect, and regulate the gas in the pipeline and has good control characteristics and sealing performance.

[0003] Many existing gas valves only have the function of shutting off and opening gas, but they cannot meet the requirements of maintaining a constant gas output without being affected by fluctuations at the input end, thereby ensuring a stable gas supply to downstream equipment. In addition, they are not equipped with overpressure safety protection devices. When overpressure gas is suddenly input at the input end, it will cause damage to the internal structure and pose a certain safety risk.

[0004] Therefore, further improvements are made to the above problems. Utility Model Content

[0005] The main purpose of the utility model is to provide a low-pressure regulator with an overpressure safety protection device, which is linked by a valve body module, a pressure stabilizing module and an overpressure protection module, so as to keep the gas output at the output end constant and not subject to fluctuations, and is provided with an overpressure protection function. It has the advantages of stable structure, high practicality and high safety.

[0006] To achieve the above objectives, the present invention provides a low-voltage regulator with an overpressure safety protection device, comprising a valve body module, a pressure stabilizing module and an overpressure protection module, wherein the pressure stabilizing module and the overpressure protection module are both installed in the valve body module, wherein:

[0007] The valve body module comprises an input end, an output end, a main through hole and an overpressure protection through hole, wherein the main through hole and the overpressure protection through hole are both located between the input end and the output end;

[0008] The pressure stabilizing module includes a first diaphragm, a first compression spring, a first adjusting knob (used to change the compression amount of the first compression spring and ultimately adjust the air pressure of the pressure stabilizing output), a pressure stabilizing mounting rod, a valve stem, a rotating shaft and a sealing gasket, wherein the first compression spring is installed between the first diaphragm and the first adjusting knob, the pressure stabilizing mounting rod is fixedly installed on a side of the first diaphragm away from the first compression spring, the first end of the valve stem is installed on the pressure stabilizing mounting rod and the second end of the valve stem is installed on the rotating shaft (fixedly installed inside the valve body module), and the sealing gasket is fixedly installed on the second end of the valve stem and is close to the upper part of the main through hole;

[0009] The overpressure protection module includes a second diaphragm, a diaphragm mounting seat, a movable shaft, a steel ball mounting seat, a steel ball, a spring mounting seat, a second compression spring, a third compression spring and a second adjusting knob (used to change the compression amount of the third compression spring, and ultimately adjust the air pressure threshold of the overpressure protection). The second diaphragm is mounted on the diaphragm mounting seat (the four edges of the second diaphragm are fixedly mounted on the interior of the valve body module and sealed). The second diaphragm is located below the spring mounting seat and the surrounding cavity between the second diaphragm and the spring mounting seat is connected to the overpressure protection through hole; a valve disc is installed on the top of the movable shaft and the valve disc is close to the lower part of the main through hole. The movable shaft is rotated from top to bottom according to The spring mounting seat (not fixed to the movable shaft), the steel ball mounting seat (not fixed to the movable shaft), the diaphragm mounting seat (not fixed to the movable shaft) and the second adjusting knob (not fixed to the movable shaft) are passed through the spring mounting seat (not fixed to the movable shaft), the steel ball mounting seat (not fixed to the movable shaft) and the second adjusting knob (not fixed to the movable shaft); the second compression spring is located between the spring mounting seat and the valve plate; the steel ball is installed in the steel ball mounting hole of the steel ball mounting seat, the movable shaft is provided with a first steel ball clamping groove and a second steel ball clamping groove is provided between the diaphragm mounting seat and the movable shaft, one side of the steel ball is close to the first steel ball clamping groove and the other side of the steel ball is close to the second steel ball clamping groove; the third compression spring is located between the diaphragm mounting seat and the second adjusting knob.

[0010] As a further preferred technical solution of the above technical solution, a handle is provided at the bottom end of the movable shaft.

[0011] As a further preferred technical solution of the above technical solution, the handle cover has a first protective cover.

[0012] As a further preferred technical solution of the above technical solution, the first adjusting knob is covered with a second protective cover.

[0013] As a further preferred technical solution of the above technical solution, both the first protective cover and the second protective cover are provided with sealing rings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the present utility model.

[0015] Figure 2 It is a cross-sectional view of the present invention (overpressure protection module opened).

[0016] Figure 3 It is a cross-sectional view of the present invention (overpressure protection module closed state).

[0017] The reference numerals include: 100, valve body module; 110, input end; 120, output end; 130, main through hole; 140, overpressure protection through hole; 200, pressure stabilizing module; 210, first diaphragm; 220, first compression spring; 230, first adjusting knob; 231, second protective cover; 240, pressure stabilizing mounting rod; 250, valve stem; 260, rotating shaft; 270, sealing gasket; 300, overpressure protection module ; 310, second diaphragm; 320, diaphragm mounting seat; 321, second steel ball slot; 330, movable shaft; 331, valve plate; 332, first steel ball slot; 333, handle; 334, first protective cover; 340, steel ball mounting seat; 341, steel ball mounting hole; 350, steel ball; 360, spring mounting seat; 370, second compression spring; 380, third compression spring; 390, second adjusting knob. DETAILED DESCRIPTION

[0018] The following description is intended to disclose the present invention and enable those skilled in the art to implement the present invention. The preferred embodiments described below are provided for illustrative purposes only, and those skilled in the art will readily appreciate other obvious variations. The basic principles of the present invention as defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0019] The utility model discloses a low-voltage stabilizer with an overpressure safety protection device. The specific embodiments of the utility model are further described below in conjunction with preferred embodiments.

[0020] In the embodiments of the present invention, those skilled in the art will note that the gas and the like involved in the present invention may be regarded as prior art.

[0021] Preferred embodiment.

[0022] like Figure 1-3 As shown, the utility model discloses a low-pressure regulator with an overpressure safety protection device, including a valve body module 100, a pressure stabilizing module 200 and an overpressure protection module 300, wherein the pressure stabilizing module 200 and the overpressure protection module 300 are both installed in the valve body module 100, wherein:

[0023] The valve body module 100 includes an input end 110, an output end 120, a main through hole 130 and an overpressure protection through hole 140. The main through hole 130 and the overpressure protection through hole 140 are both located between the input end 110 and the output end 120.

[0024] The pressure stabilizing module 200 includes a first diaphragm 210, a first compression spring 220, a first adjusting knob 230 (used to change the compression amount of the first compression spring and ultimately adjust the air pressure of the pressure stabilizing output), a pressure stabilizing mounting rod 240, a valve stem 250, a rotating shaft 260 and a sealing gasket 270. The first compression spring 220 is installed between the first diaphragm 210 and the first adjusting knob 230. The pressure stabilizing mounting rod 240 is fixedly installed on a side of the first diaphragm 210 away from the first compression spring 220. A first end of the valve stem 250 is installed on the pressure stabilizing mounting rod 240 and a second end of the valve stem 250 is installed on the rotating shaft 260 (fixedly installed inside the valve body module). The sealing gasket 270 is fixedly installed on the second end of the valve stem 250 and is close to the upper portion of the main through hole 130.

[0025] The overpressure protection module 300 includes a second diaphragm 310, a diaphragm mounting seat 320, a movable shaft 330, a steel ball mounting seat 340, a steel ball 350, a spring mounting seat 360, a second compression spring 370, a third compression spring 380 and a second adjusting knob 390 (used to change the compression amount of the third compression spring and ultimately adjust the air pressure threshold of the overpressure protection). The second diaphragm 310 is installed on the diaphragm mounting seat 320 (the four edges of the second diaphragm are fixedly mounted on the inside of the valve body module and sealed). The second diaphragm 310 is located below the spring mounting seat 360 and the surrounding cavity between the second diaphragm 310 and the spring mounting seat 360 is connected to the overpressure protection through hole 140; a valve disc 331 is installed on the top of the movable shaft 330 and the valve disc 331 is close to the lower part of the main through hole 130. The movable shaft 330 is rotated from top to bottom according to the The second compression spring 370 is located between the spring mounting seat 360 and the valve plate 331; the steel ball 350 is installed in the steel ball mounting hole 341 of the steel ball mounting seat 340, the movable shaft 330 is provided with a first steel ball slot 332 and a second steel ball slot 321 is provided between the diaphragm mounting seat 320 and the movable shaft 330, one side of the steel ball 350 is close to the first steel ball slot 332 and the other side of the steel ball 350 is close to the second steel ball slot 321; the third compression spring 380 is located between the diaphragm mounting seat 320 and the second adjusting knob 390.

[0026] Specifically, a handle 333 is provided at the bottom end of the movable shaft 330 .

[0027] More specifically, the handle 333 is covered with a first protective cover 334 .

[0028] Furthermore, the first adjusting knob 230 is covered with a second protective cover 231 .

[0029] Furthermore, both the first protective cover and the second protective cover are provided with sealing rings.

[0030] For voltage regulator modules:

[0031] The gas is output through the input end, the main through-hole, and the output end. When the gas input at the input end increases, the upward force of the gas on the first diaphragm increases after passing through the main through-hole, so that the first diaphragm drives the pressure-stabilizing mounting rod to move upward, and the second end of the valve stem moves upward. The rotating shaft serves as a fulcrum, and the first end of the valve stem moves downward, so that the sealing gasket approaches the main through-hole, resulting in a decrease in the gas output from the main through-hole, thereby maintaining a stable output and preventing excessive output due to excessive input at the input end;

[0032] When the gas input at the input end decreases, the upward force of the gas on the first diaphragm after passing through the main through-hole decreases, so that the first diaphragm drives the pressure-stabilizing mounting rod to move downward, and the first end of the valve stem moves downward. With the rotating shaft as a fulcrum, the second end of the valve stem moves downward, so that the sealing gasket moves away from the main through-hole, resulting in an increase in the gas output from the main through-hole, thereby maintaining a stable output and preventing excessively low output due to excessively low input at the input end.

[0033] For overpressure protection modules:

[0034] When the input gas increases instantaneously, in order to safely close the main through-hole, the overpressure gas will enter the surrounding cavity through the overpressure protection through-hole, thereby rapidly increasing the downward force on the second diaphragm. After the second diaphragm moves down to the threshold value (under normal circumstances, a certain amount of gas will also enter the surrounding cavity, but it will not cause the second diaphragm to move down to the threshold value), the second steel ball clamping groove moves down to one side of the steel ball, so that the steel ball can move to the second clamping groove. The steel ball was originally located in the steel ball mounting hole and is more biased towards the first steel ball clamping groove, thereby blocking the movable shaft. At this time, after the second steel ball clamping groove is moved down, since the second compression spring is compressed, it will drive the movable shaft to move upward. Due to the inclined surface of the first steel ball clamping groove, the steel ball will be forced to move from the first steel ball clamping groove to the second steel ball clamping groove, and the first steel ball clamping groove moves up with the movable shaft, releasing the restriction on the movable shaft, so that the movable shaft moves up completely until the valve disc closes the main through-hole, thereby shutting off the gas.

[0035] When it needs to be reopened, just apply downward force to the handle to drive the movable shaft downward, so that the first steel ball clamping groove moves down to the side of the steel ball again, and the steel ball returns to the steel ball installation hole and the first steel ball clamping groove and is re-locked to the movable shaft, and will not move up due to the second compression spring.

[0036] It is worth mentioning that the technical features such as gas involved in this utility model patent application should be regarded as prior art. The specific structure, working principle and possible control method and spatial layout method of these technical features can be selected by conventional options in the field, and should not be regarded as the invention point of this utility model patent. This utility model patent will not be further elaborated.

[0037] For those skilled in the art, it is still possible to modify the technical solutions described in the aforementioned embodiments, or to replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model should be included in the scope of protection of the present utility model.

Claims

1. A low voltage regulator with an overpressure safety protection device, characterized in that: It includes a valve body module, a pressure stabilizing module and an overpressure protection module, wherein the pressure stabilizing module and the overpressure protection module are both installed in the valve body module, wherein: The valve body module comprises an input end, an output end, a main through hole and an overpressure protection through hole, wherein the main through hole and the overpressure protection through hole are both located between the input end and the output end; The pressure stabilizing module includes a first diaphragm, a first compression spring, a first adjusting knob, a pressure stabilizing mounting rod, a valve stem, a rotating shaft, and a sealing gasket, wherein the first compression spring is installed between the first diaphragm and the first adjusting knob, the pressure stabilizing mounting rod is fixedly installed on a side of the first diaphragm away from the first compression spring, a first end of the valve stem is installed on the pressure stabilizing mounting rod, and a second end of the valve stem is installed on the rotating shaft, and the sealing gasket is fixedly installed on the second end of the valve stem and is close to the upper portion of the main through hole; The overpressure protection module includes a second diaphragm, a diaphragm mounting seat, a movable shaft, a steel ball mounting seat, a steel ball, a spring mounting seat, a second compression spring, a third compression spring and a second adjusting knob, the second diaphragm being mounted on the diaphragm mounting seat, the second diaphragm being located below the spring mounting seat and the enclosing cavity between the second diaphragm and the spring mounting seat being connected to the overpressure protection through hole; a valve disc is mounted on the top of the movable shaft and the valve disc is close to the lower part of the main through hole, the movable shaft passes through the spring mounting seat, the steel ball mounting seat, the diaphragm mounting seat and the second adjusting knob in sequence from top to bottom; the second compression spring is located between the spring mounting seat and the valve disc; the steel ball is mounted in the steel ball mounting hole of the steel ball mounting seat, the movable shaft is provided with a first steel ball clamping groove and a second steel ball clamping groove is provided between the diaphragm mounting seat and the movable shaft, one side of the steel ball is close to the first steel ball clamping groove and the other side of the steel ball is close to the second steel ball clamping groove; the third compression spring is located between the diaphragm mounting seat and the second adjusting knob.

2. A low voltage regulator with an overpressure safety protection device according to claim 1, characterized in that: A handle is provided at the bottom end of the movable shaft.

3. A low voltage regulator with an overpressure safety protection device according to claim 2, characterized in that: The handle cover has a first protective cover.

4. A low voltage regulator with an overpressure safety protection device according to claim 3, characterized in that: The first adjusting knob is covered with a second protective cover.

5. A low voltage regulator with an overpressure safety protection device according to claim 4, characterized in that: The first protective cover and the second protective cover are both provided with sealing rings.

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