An explosion-proof protection device for pressure sensors

Abstract

The utility model relates to a kind of explosion-proof protection device for pressure sensor, including protective shell and sensor body, sensor body is arranged in the inside of protective shell, the top of protective shell is provided with shell cover, the upper surface of shell cover is installed with cylinder, the inside of cylinder is provided with piston, the upper surface of piston is connected with guide rod, and the end of guide rod is penetrated to the outside of cylinder;The transmission line of sensor body is penetrated to the outside of protective shell, the bottom of protective shell is provided with the clamping mechanism that can be fixed to transmission line.It plays the role of isolation when sensor body appears implosion or spontaneous combustion by the setting of protective shell and shell cover, can avoid endangering external environment, and when sensor body appears implosion or spontaneous combustion, by the setting of piston and guide rod, the purpose of slowing down pressure can be played, avoid pressure continues to rise, lead to the condition that protective shell breaks and ignites external combustible and explosive material, to avoid the occurrence of safety accident.

Description

Technical Field

[0001] This utility model relates to the field of pressure sensor technology, specifically to an explosion-proof protection device for pressure sensors. Background Technology

[0002] A pressure sensor is a device that converts a physical quantity of pressure into an electrical signal. It senses pressure changes through an internal sensing element and outputs an electrical signal for subsequent processing and control. Pressure sensors are widely used in industrial automation, the automotive industry, medical equipment, environmental monitoring, and consumer electronics.

[0003] During use, if a pressure sensor experiences an internal explosion or spontaneous combustion, it can endanger the external environment, igniting surrounding gases or liquids and potentially causing fires or explosions. Furthermore, when its transmission lines are stretched, they can easily become entangled in the sensor, damaging its structure and potentially leading to sensor failure or damage. Utility Model Content

[0004] The purpose of this invention is to provide an explosion-proof protection device for pressure sensors, which effectively solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution.

[0006] An explosion-proof protection device for a pressure sensor includes a protective housing and a sensor body. The sensor body is disposed inside the protective housing. A cover is provided on the top of the protective housing, and a cylinder is mounted on the upper surface of the cover. A piston is disposed inside the cylinder, and a guide rod is connected to the upper surface of the piston, with the end of the guide rod extending to the outside of the cylinder. The transmission line of the sensor body extends to the outside of the protective housing, and a clamping mechanism for fixing the transmission line is provided at the bottom of the protective housing.

[0007] Furthermore, the clamping mechanism includes two fixed plates installed at the ends of the protective housing, and a threaded rod with a pair of reverse threads is rotatably installed between the two fixed plates. Nut blocks are installed on both reverse threads of the threaded rod, and clamping blocks are installed on the outer surface of the nut blocks.

[0008] Furthermore, a limiting rod is connected between the two fixed plates, and the limiting rod and the threaded rod are arranged parallel to each other. Two sliding sleeves are slidably installed on the outer surface of the limiting rod, and the two sliding sleeves are respectively connected to the two clamping blocks.

[0009] Furthermore, a cover is installed on the outer surface of one of the fixed plates, the end of the threaded rod extends into the interior of the cover and is fitted with a worm gear, and a worm is rotatably installed inside the cover, the worm meshing with the worm gear.

[0010] Furthermore, the end of the worm gear extends to the outside of the casing and has a hexagonal groove.

[0011] Furthermore, a top block is installed on the top of the guide rod.

[0012] Furthermore, the cover is connected to the protective housing by the first screw, and the sensor body is mounted on the bottom wall of the protective housing by the second screw.

[0013] Furthermore, a rubber pad is provided on the inner side of the clamping block, and the outer surface of the rubber pad is provided with anti-slip texture.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows.

[0015] 1. This utility model protects the sensor body by providing a protective shell and cover. In the event of an internal explosion or spontaneous combustion, it acts as an isolation mechanism, preventing harm to the external environment. Furthermore, when the sensor body experiences an internal explosion or spontaneous combustion, the pressure inside the protective shell increases. Therefore, the piston and guide rod design drives the piston to move upward within the cylinder as the internal pressure of the protective shell increases, thereby reducing the pressure and preventing the protective shell from rupturing and igniting external flammable and explosive substances, thus avoiding a safety accident.

[0016] 2. This utility model can fix the transmission line individually by rotating the threaded rod and driving two clamping blocks to hold it on the outside of the transmission line. When it is subjected to external force, it can prevent the pulling force from being transmitted to the sensor body and causing structural damage, failure or even damage. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a frontal cross-sectional view of the present invention.

[0019] Figure 3 This is a schematic diagram of the bottom structure of the protective shell in this utility model;

[0020] Figure 4 This is a schematic diagram of the clamping mechanism in this utility model.

[0021] In the diagram: 100, protective housing; 101, sensor body; 102, cover; 103, cylinder; 104, guide rod; 105, piston; 106, transmission line; 200, clamping mechanism; 201, fixing plate; 202, threaded rod; 203, nut block; 204, clamping block; 300, limiting rod; 301, sliding sleeve; 400, cover; 401, worm gear; 402, worm; 500, hexagonal groove; 600, top block; 700, first screw; 701, second screw. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the relative positional relationship remains unchanged after the connection. The directional terms mentioned in the embodiments of this utility model, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this utility model, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0024] In this embodiment of the invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0025] Please see Figures 1-4This utility model provides an explosion-proof protection device for a pressure sensor, comprising a protective housing 100 and a sensor body 101. The sensor body 101 is disposed inside the protective housing 100. A cover 102 is provided on the top of the protective housing 100. A cylinder 103 is mounted on the upper surface of the cover 102. A piston 105 is disposed inside the cylinder 103. A guide rod 104 is connected to the upper surface of the piston 105, and the end of the guide rod 104 extends to the outside of the cylinder 103. A transmission line 106 of the sensor body 101 extends to the outside of the protective housing 100. A clamping mechanism 200 for fixing the transmission line 106 is provided at the bottom of the protective housing 100.

[0026] During use, the protective housing 100 and the cover 102 isolate the sensor body 101 from the external environment. They act as an isolation mechanism in case the sensor body 101 experiences an internal explosion or spontaneous combustion, preventing harm to the external environment. Furthermore, when the sensor body 101 experiences an internal explosion or spontaneous combustion, the rapid expansion of gas will increase the internal pressure of the protective housing 100. To prevent the protective housing 100 from rupturing due to excessive pressure, the piston 105 and guide rod 104 are designed so that when the internal pressure of the protective housing 100 increases, the piston 105 will move upward within the cylinder 103, thereby reducing the pressure and preventing the protective housing 100 from rupturing and igniting external flammable and explosive substances, thus avoiding a safety accident.

[0027] Furthermore, the transmission line 106 is fixed by the clamping mechanism 200. When it is pulled by an external force, the clamping mechanism 200 is used to bear the pulling force, thereby preventing the pulling force from being transmitted to the sensor body 101, which could lead to structural damage, failure, or even damage.

[0028] Preferably, the clamping mechanism 200 includes two fixed plates 201 installed at the end of the protective housing 100, and a threaded rod 202 with a pair of reverse threads is rotatably installed between the two fixed plates 201. Nut blocks 203 are installed on both reverse threads of the threaded rod 202, and clamping blocks 204 are installed on the outer surface of the nut blocks 203.

[0029] When the threaded rod 202 is rotated, the reverse thread causes the two nut blocks 203 to move closer to each other, thereby causing the two clamping blocks 204 to clamp the outside of the transmission line 106 for fixation.

[0030] Preferably, a limiting rod 300 is connected between the two fixed plates 201, and the limiting rod 300 and the threaded rod 202 are arranged parallel to each other. Two sliding sleeves 301 are slidably installed on the outer surface of the limiting rod 300, and the two sliding sleeves 301 are respectively connected to the two clamping blocks 204.

[0031] By setting the limiting rod 300 and the sliding sleeve 301, the clamping block 204 can be limited. When the threaded rod 202 is rotating, it can prevent the clamping block 204 from rotating around the threaded rod 202, so that it can move smoothly along the length direction of the threaded rod 202.

[0032] Preferably, a cover 400 is mounted on the outer surface of one of the fixing plates 201, the end of the threaded rod 202 extends into the interior of the cover 400 and is mounted with a worm gear 401, and a worm 402 is rotatably mounted inside the cover 400, and the worm 402 is meshed with the worm gear 401.

[0033] Since the worm 402 and the worm wheel 401 mesh with each other, when the worm 402 is rotated, the threaded rod 202 can be driven to rotate. Furthermore, since the worm 402 and the worm wheel 401 have a self-locking property, the clamping effect of the clamping block 204 on the transmission line 106 can be guaranteed, and the clamping block 204 can be prevented from becoming loose after a period of use.

[0034] Preferably, the end of the worm gear 402 extends to the outside of the cover 400 and has a hexagonal groove 500.

[0035] When rotating the threaded rod 202, a specific type of hex wrench must be inserted into the hexagonal slot 500 to perform the operation. This can prevent accidental contact that could cause the clamping block 204 to loosen its grip on the transmission line 106, thus ensuring the stable clamping effect of the clamping block 204.

[0036] Preferably, a top block 600 is mounted on the top of the guide rod 104.

[0037] The top block 600 can limit the guide rod 104 to prevent the piston 105 from falling downward into the protective housing 100.

[0038] Preferably, the cover 102 is connected to the protective housing 100 by a first screw 700, and the sensor body 101 is mounted on the bottom wall of the protective housing 100 by a second screw 701.

[0039] When the sensor body 101 malfunctions, the cover 102 can be opened to remove it from the protective housing 100 for repair or replacement.

[0040] Preferably, the inner side of the clamping block 204 is provided with a rubber pad, and the outer surface of the rubber pad is provided with anti-slip texture.

[0041] By using rubber pads and anti-slip textures, the friction between the clamping block 204 and the outer surface of the transmission line 106 can be increased, improving the clamping effect and preventing scratches on the surface caused by rigid contact.

[0042] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An explosion-proof protection device for a pressure sensor, comprising a protective housing (100) and a sensor body (101), wherein the sensor body (101) is disposed inside the protective housing (100), characterized in that: The protective housing (100) is provided with a cover (102) on the top, and a cylinder (103) is installed on the upper surface of the cover (102). A piston (105) is provided inside the cylinder (103), and a guide rod (104) is connected to the upper surface of the piston (105). The end of the guide rod (104) extends through to the outside of the cylinder (103). The transmission line (106) of the sensor body (101) extends to the outside of the protective housing (100), and the bottom of the protective housing (100) is provided with a clamping mechanism (200) that can fix the transmission line (106).

2. The explosion-proof protection device for a pressure sensor according to claim 1, characterized in that: The clamping mechanism (200) includes two fixing plates (201) installed at the end of the protective housing (100). A threaded rod (202) with a pair of reverse threads is rotatably installed between the two fixing plates (201). Nut blocks (203) are installed on both of the reverse threads of the threaded rod (202). A clamping block (204) is installed on the outer surface of the nut block (203).

3. The explosion-proof protection device for a pressure sensor according to claim 2, characterized in that: A limiting rod (300) is connected between the two fixed plates (201), and the limiting rod (300) and the threaded rod (202) are arranged parallel to each other. Two sliding sleeves (301) are slidably installed on the outer surface of the limiting rod (300), and the two sliding sleeves (301) are respectively connected to the two clamping blocks (204).

4. The explosion-proof protection device for a pressure sensor according to claim 2, characterized in that: One of the fixing plates (201) has a cover (400) mounted on its outer surface. The end of the threaded rod (202) extends into the interior of the cover (400) and is fitted with a worm gear (401). A worm (402) is rotatably mounted inside the cover (400) and is meshed with the worm gear (401).

5. The explosion-proof protection device for a pressure sensor according to claim 4, characterized in that: The end of the worm (402) extends through to the outside of the cover (400) and has a hexagonal groove (500).

6. The explosion-proof protection device for a pressure sensor according to claim 2, characterized in that: A top block (600) is mounted on the top of the guide rod (104).

7. The explosion-proof protection device for a pressure sensor according to claim 1, characterized in that: The cover (102) is connected to the protective housing (100) by a first screw (700), and the sensor body (101) is mounted on the bottom wall of the protective housing (100) by a second screw (701).

8. The explosion-proof protection device for a pressure sensor according to claim 2, characterized in that: The inner side of the clamping block (204) is provided with a rubber pad, and the outer surface of the rubber pad is provided with anti-slip texture.

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