Detachable anti-dropping alarm switch for loading arm

Abstract

The utility model relates to a detachable crane pipe anti -drop alarm switch for monitoring the connection between crane pipe and liquefied gas loading, include: main part and with main part detachable connection electronic part, main part includes: connection main part, for annular hollow structure, set up in crane pipe terminal, two buckle parts, symmetry sets up in both sides of connection main part, connecting portion sets up in one side of connection main part respectively with both sides buckle part perpendicular, and the surface of connecting portion is equipped with threaded hole, fixed buckle is along first direction respectively and is set up on each buckle part, electronic part contains casing and sets up in the sensing circuit of casing inside, casing includes: buckle connecting hole, sets up in the casing surface near connecting portion one side, forms with fixed buckle and inserts the cooperation of cooperation, bolt fastener is along second direction and is set up in the casing, and with threaded hole forms detachable connection, the utility model brings the convenience for liquefied gas loading site operation and safety maintenance, and the advantage is remarkable.

Description

Technical Field

[0001] This utility model relates to the field of safety technology for loading arms of liquefied gas, specifically a detachable loading arm anti-dislodgement alarm switch. Background Technology

[0002] Loading liquefied petroleum gas (LPG) is a relatively high-risk operation. The loading arm (also known as a fluid loading arm) is a fluid pipeline component that connects the tanker truck to the loading and unloading pipeline for the transmission of liquefied gas. An anti-detachment alarm switch is installed at the end of the loading arm. If the loading arm is not installed properly, it will trigger an alarm, and the entire loading system will stop working and quickly close the discharge valve to prevent large-scale leakage of liquefied gas.

[0003] The anti-detachment alarm switch for loading arms consists of a main body and an electronic switch. Currently, the two parts of the anti-detachment alarm switch are integrated, which causes inconvenience for on-site operation and safety maintenance. Specifically, the tail wire of the electronic part of the anti-detachment alarm switch is 2 meters long, making the entire disassembly and assembly process very inconvenient. Furthermore, if the electronic part of the anti-detachment alarm switch is damaged, the entire anti-detachment alarm switch must be replaced, significantly increasing the overall production and loading time.

[0004] Therefore, it is essential to design a detachable loading arm anti-dislodgement alarm switch.

[0005] It is understood that the above statements only provide background information related to this utility model and do not necessarily constitute prior art. Utility Model Content

[0006] The purpose of this invention is to provide a detachable loading arm anti-dislodgement alarm switch, which brings convenience to the on-site operation and safety maintenance of liquefied gas loading.

[0007] To achieve the above objectives, this utility model provides a detachable loading arm anti-disconnection alarm switch for monitoring the connection between the loading arm and liquefied gas loading, comprising: a main body and an electronic part detachably connected to the main body.

[0008] The main body includes: a connecting body, which is a ring-shaped hollow structure and is fitted onto the loading arm terminal; the loading arm terminal is the connection end between the loading arm and the liquefied gas loading; two latching parts, symmetrically arranged on both sides of the connecting body; a connecting part, which is arranged on one side of the connecting body and is perpendicular to the latching parts on both sides; and the surface of the connecting part is provided with threaded holes; and a fixing buckle, which is respectively disposed through each of the latching parts along a first direction.

[0009] The electronic component includes a housing and a sensing circuit disposed inside the housing. The housing includes: a snap-fit ​​connection hole disposed on the housing surface near the connection portion, which is inserted into the fixing snap-fit; and a bolt fastener disposed through the housing in a second direction, which is detachably connected to the threaded hole.

[0010] Preferably, the first direction is the direction from away from the connecting part to close to the connecting part when looking down at the loading arm anti-detachment alarm switch.

[0011] Preferably, the second direction is opposite to the first direction.

[0012] Preferably, a limit switch is provided in the buckle connection hole. The limit switch is connected to the sensing circuit. When the fixing buckle is inserted into the buckle connection hole, the limit switch is triggered.

[0013] Preferably, the loading arm anti-dislodgement alarm switch further includes an external alarm sensor connected to the sensing circuit; wherein, the limit switch is configured to be triggered when the fixing buckle is inserted into the buckle connection hole, thereby turning on the sensing circuit; when the fixing buckle is disengaged from the buckle connection hole, the limit switch is reset, thereby turning off the sensing circuit and triggering the external alarm sensor to issue an alarm signal.

[0014] Preferably, the shape of the buckle connection hole matches the shape of the fixing buckle.

[0015] Preferably, the inner diameter of the annular hollow structure of the connecting body is adapted to the outer diameter of the loading arm terminal.

[0016] In summary, compared with the prior art, the detachable loading arm anti-disengagement alarm switch provided by this utility model improves the original non-detachable connection method into a detachable connection by opening threaded holes in the main body of the existing loading arm anti-disengagement alarm switch and equipping the electronic part with bolt fasteners, which greatly improves the convenience of installation and maintenance of the loading arm anti-disengagement alarm switch and has significant advantages. Attached Figure Description

[0017] Figure 1 This is a front view of the loading arm section of the improved loading arm anti-disengagement alarm switch of this utility model.

[0018] Figure 2 This is a top view of the overall structure of the improved loading arm anti-detachment alarm switch of this utility model.

[0019] In the picture:

[0020] 1-Main body, 10-First direction, 11-Connecting body, 12-Snap-on part, 13-Connecting part, 121-Fixing snap-on, 131-Threaded hole, 2-Electronic part, 21-Snap-on connecting hole, 22 Bolt fastener. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and by providing a detailed description of a preferred embodiment.

[0022] It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions. They are only used to facilitate and clarify the illustration of the embodiments of this utility model, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationship, or adjustments to the size should still fall within the scope of the technical content disclosed in this utility model, provided that they do not affect the effects and objectives that this utility model can produce.

[0023] like Figure 1 and Figure 2 As shown, this utility model provides a detachable loading arm anti-disconnection alarm switch for monitoring the connection between the loading arm and the liquefied gas loading vehicle, including: a main body 1 and an electronic part 2 detachably connected to the main body 1.

[0024] The main body 1 includes:

[0025] The connecting body 11 is a ring-shaped hollow structure, used to be fitted onto the loading arm terminal; wherein, the loading arm terminal is the connection end between the loading arm and the liquefied gas loading vehicle.

[0026] Two latching parts 12 are symmetrically arranged on both sides of the connecting body 11;

[0027] A connecting part 13 is disposed on one side of the connecting body 11, and is perpendicular to the two buckle parts 12 on both sides respectively. The surface of the connecting part 13 has a plurality of threaded holes 132 with a certain depth.

[0028] A fixing buckle 121 is disposed through the buckle portion 12 along a first direction 10; wherein, the first direction 10 is: when looking down at the loading arm anti-disengagement alarm switch, the direction from away from the connecting portion 13 to close to the connecting portion 13; in a preferred embodiment of the present invention, since two buckle portions 12 are provided, two fixing buckles 121 are provided, and each fixing buckle 121 corresponds to one buckle portion 12.

[0029] The electronic component 2 includes a housing and a sensing circuit disposed inside the housing; wherein the housing includes:

[0030] The snap-fit ​​connection hole 21 is provided on the housing surface near the connecting part 13, and forms a plug-in engagement with the fixing snap 121;

[0031] The bolt fastener 22 is provided to penetrate the entire housing along the second direction, and after penetrating the entire housing, the bolt fastener 22 extends out and is inserted into the threaded hole 132 of the connecting part 13, and is tightened by threads to achieve a detachable connection; wherein, the second direction is opposite to the first direction 10.

[0032] Furthermore, a limit switch is also provided in the buckle connection hole 21. The limit switch is connected to the sensing circuit provided inside the housing. When the fixing buckle 121 is inserted into the buckle connection hole 21, the fixing buckle 121 can trigger the limit switch provided in the buckle connection hole 21, thereby making the sensing circuit in a conducting state.

[0033] Furthermore, the shape of the buckle connection hole 21 matches the shape of the fixing buckle 121 to ensure that the limit switch is stably triggered when the fixing buckle 121 is inserted.

[0034] It can be understood that the sensing circuit of the electronic part 2 is also connected to an external alarm sensor. When the main body 1 and the housing structure of the electronic part 2 are correctly connected, the fixing buckle 121 triggers the limit switch to close. At this time, the sensing circuit is turned on, and the external alarm sensor does not alarm. Once the two become loose or separate, the fixing buckle 121 becomes loose or disengages from the buckle connection hole 21. At this time, the limit switch is reset, the sensing circuit is disconnected, and the external alarm sensor is triggered to issue an alarm signal.

[0035] Furthermore, the inner diameter of the annular hollow structure of the connecting body 1 is adapted to the outer diameter of the loading arm terminal.

[0036] Specifically, the working principle of the loading arm anti-detachment alarm switch is as follows: In practical applications, the loading arm is connected to the liquefied gas loading unit. To prevent accidents caused by accidental detachment of the loading arm from the liquefied gas loading unit, the loading arm anti-detachment alarm switch is installed at the connection point. Under normal conditions, the fixing buckle 121 and the buckle part 12 are fixedly connected and do not undergo relative displacement, thereby ensuring that there is no relative displacement between the connection end of the loading arm and the liquefied gas loading unit. At this time, the fixing buckle 121 triggers the limit switch set in the buckle connection hole 21 to close, the sensing circuit is turned on, and the external alarm sensor does not alarm. However, since the loading arm anti-detachment alarm switch is installed at the end of the loading arm, once the fixing buckle 121 becomes loose or detaches from the buckle connection hole 21, it indicates that the loading arm has become loose or detached from the liquefied gas loading unit. At this time, the limit switch resets, the sensing circuit is disconnected, and the external alarm sensor is triggered to issue an alarm signal to inform the staff that an abnormality has occurred.

[0037] In summary, the present invention provides a detachable anti-disengagement alarm switch for loading arms. This design improves the original non-detachable connection method by opening threaded holes in the main body of the existing anti-disengagement alarm switch and equipping the electronic part with bolt fasteners, thereby greatly improving the convenience of installation and maintenance of the anti-disengagement alarm switch for loading arms, and has significant advantages.

[0038] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above content. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A detachable anti-dropping alarm switch for a loading arm used to monitor the connection between the loading arm and the liquefied gas loading vehicle, characterized in that, include: The main body and the electronic components detachably connected to the main body; The main body includes: The main body of the connection is a ring-shaped hollow structure, which is fitted onto the loading arm terminal; the loading arm terminal is the connection end between the loading arm and the liquefied gas loading vehicle. Two latching parts are symmetrically arranged on both sides of the connecting body; A connecting portion is disposed on one side of the connecting body and is perpendicular to the buckle portions on both sides; Furthermore, the surface of the connecting part is provided with a threaded hole; A fixing buckle is respectively disposed through each of the buckle portions along the first direction; The electronic component includes a housing and a sensing circuit disposed inside the housing, wherein the housing comprises: A snap-fit ​​connection hole is provided on the housing surface near the connecting part, and forms an insertion fit with the fixing snap; The bolt fastener is disposed through the housing along the second direction and forms a detachable connection with the threaded hole.

2. The alarm switch of claim 1, wherein the alarm switch is configured to provide an audible alarm when the swivel fitting is not connected to the hose. The first direction is the direction from away from the connecting part to close to the connecting part when looking down at the loading arm anti-disengagement alarm switch.

3. The alarm switch of claim 2, wherein the alarm switch is configured to activate the alarm when the probe is not in the probe receiving portion. The second direction is opposite to the first direction.

4. The alarm switch of claim 1, wherein the alarm switch is configured to provide a signal to the alarm system when the swivel fitting is not connected to the hose. A limit switch is provided in the buckle connection hole. The limit switch is connected to the sensing circuit. When the fixing buckle is inserted into the buckle connection hole, the limit switch is triggered.

5. The alarm switch of claim 4, wherein the alarm switch is configured to provide a signal to the controller when the probe is in the second position. It also includes external alarm sensors connected to the sensing circuit; The limit switch is configured to be triggered when the fixing buckle is inserted into the buckle connection hole, thereby turning on the sensing circuit; when the fixing buckle is disengaged from the buckle connection hole, the limit switch is reset, thereby turning off the sensing circuit and triggering an external alarm sensor to issue an alarm signal.

6. The alarm switch of claim 1, wherein the alarm switch is configured to provide a visual indication of the disconnection of the swivel. The shape of the buckle connection hole matches the shape of the fixing buckle.

7. The alarm switch of claim 1, wherein the alarm switch is configured to provide a visual indication of the disconnection of the swivel. The inner diameter of the annular hollow structure of the connecting body is adapted to the outer diameter of the loading arm terminal.

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