Monitoring device

Abstract

The utility model relates to the technical field of natural gas monitoring, in particular to a monitoring device. The monitoring device comprises a shell, a movable part and a first elastic part. The shell is provided with a containing cavity and an opening which are connected, and the opening is used for communicating with a pipeline so that natural gas can flow into the containing cavity. The movable part is movably arranged in the containing cavity. The first elastic piece is connected between the bottom wall of the shell and the movable piece, and the first elastic piece is configured to push the movable piece to different preset positions when natural gas applies different acting forces to the movable piece. Compared with the prior art that the pipeline is monitored through electronic parts such as a sensor, the monitoring device provided by the utility model has the advantages that the service life of the monitoring device is prolonged while whether natural gas leakage occurs in the pipeline or not is monitored, the structural complexity of the monitoring device is reduced, and the monitoring cost is reduced.

Description

Technical Field

[0001] This application relates to the technical field of natural gas monitoring, and particularly to a monitoring device. Background Art

[0002] Natural gas is generally transported from the production site to the gas distribution centers in various cities or regions through pipelines, and then transported to each user through pipelines. During the transportation of natural gas, monitoring devices are usually required to monitor whether there is natural gas leakage inside the pipeline to ensure the normal transportation of natural gas inside the pipeline.

[0003] In the prior art, monitoring devices with electronic components such as sensors are usually used for monitoring. However, if natural gas leaks, the electronic components are prone to malfunction after long-term contact with natural gas, thus losing the monitoring function. Utility Model Content

[0004] This application discloses a monitoring device that can monitor whether there is natural gas leakage in the pipeline for transporting natural gas.

[0005] To achieve the above object, this application discloses a monitoring device for monitoring the pipeline for transporting natural gas, including:

[0006] A housing having a connected receiving cavity and an opening for communicating with the pipeline to allow natural gas to flow into the receiving cavity;

[0007] A movable member movably disposed in the receiving cavity; and

[0008] A first elastic member connected between the bottom wall of the housing and the movable member, and configured to push the movable member to a plurality of preset positions when natural gas exerts different forces on the movable member.

[0009] Optionally, it further includes a limiting member disposed in the receiving cavity and used to limit the movable member from detaching from the receiving cavity through the opening.

[0010] Optionally, it further includes a guide rod, one end of which is connected to the bottom wall and the other end is connected to the limiting member, and the movable member is sleeved on the guide rod and can move along the axis of the guide rod.

[0011] Optionally, it further includes a mounting plate detachably disposed on the bottom wall, and the end of the first elastic member away from the movable member is connected to the mounting plate.

[0012] Optionally, the housing is provided with a plurality of scales, and the plurality of scales correspond to the plurality of preset positions one by one.

[0013] Optionally, it further includes:

[0014] A monitoring pipe, one end of the monitoring pipe is used to communicate with the pipeline;

[0015] A connecting seat, the connecting seat communicates with the other end of the monitoring pipe, the connecting seat is provided with an installation groove communicating with the monitoring pipe, and a clamping groove is provided on the inner side wall of the connecting seat surrounding the installation groove; and

[0016] A clamping component, the clamping component includes:

[0017] A clamping member, the clamping member is spaced from the outer side wall of the housing and is used to cooperate with the clamping groove; and

[0018] A second elastic member, the second elastic member is connected between the clamping member and the outer side wall of the housing, and applies an elastic force to the clamping member away from the outer side wall of the housing.

[0019] Optionally, a receiving groove is provided on the outer side wall of the housing, one end of the second elastic member is connected to the bottom wall of the receiving groove, and the other end is connected to the clamping member.

[0020] Optionally, the connecting seat is provided with a through hole, the through hole penetrates through the inner wall of the clamping groove to communicate with the clamping groove;

[0021] The monitoring device further includes:

[0022] An unlocking component, the unlocking component penetrates through the through hole and can move along the axial direction of the through hole, and the unlocking component is configured to be able to push the clamping member to overcome the elastic force to disengage from the clamping groove; and

[0023] A reset component, the reset component is arranged in the through hole and is used to reset the unlocking component.

[0024] Optionally, the through hole includes a coaxial first through hole and a second through hole, the second through hole is located between the first through hole and the clamping groove, and the aperture of the first through hole is larger than the aperture of the second through hole;

[0025] The unlocking component includes:

[0026] An unlocking rod, the unlocking rod penetrates through the first through hole and the second through hole, and one end of the unlocking rod can push the clamping member to overcome the elastic force to disengage from the clamping groove; and

[0027] A pressing member, the pressing member is connected to the other end of the unlocking rod, and the bottom wall of the first through hole can limit the pressing member.

[0028] Optionally, the reset component includes:

[0029] The first limiting plate, the first limiting plate is arranged in the second through hole;

[0030] The second limiting plate, the second limiting plate is arranged in the second through hole and is located between the first limiting plate and the clamping groove, and the unlocking rod passes through the first limiting plate and the second limiting plate;

[0031] The third limiting plate, the third limiting plate is sleeved on the unlocking rod and is located between the first limiting plate and the second limiting plate; and

[0032] The reset member, one end of the reset member is connected between the second limiting plate and the third limiting plate and applies a reset force to the third limiting plate towards the first limiting plate.

[0033] A monitoring device provided by the present application, compared with the prior art, at least has the following beneficial effects:

[0034] A monitoring device provided by the present application, compared with the prior art that monitors pipelines through electronic components such as sensors, can extend the service life of the monitoring device while monitoring whether there is natural gas leakage in the pipeline, and reduces the structural complexity of the monitoring device and the monitoring cost. Description of the Drawings

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0036] In the following, the present application will be described in more detail based on the embodiments and with reference to the drawings. Among them:

[0037] Figure 1 is a cross-sectional view of the monitoring device provided by the embodiment of the present application;

[0038] Figure 2 is a schematic structural diagram of the monitoring device, the connecting seat and the monitoring pipe provided by the embodiment of the present application;

[0039] Figure 3 is a partial cross-sectional view of the connecting seat at the first through hole provided by the embodiment of the present application;

[0040] Figure 4 is a partial cross-sectional view of the monitoring device and the connecting seat in the assembled state provided by the embodiment of the present application;

[0041] Figure 5It is a schematic structural diagram of the monitoring device provided by the embodiment of the present application installed on a pipeline.

[0042] In the drawings, the same components are denoted by the same reference numerals. The drawings are not drawn to actual scale.

[0043] Reference numerals:

[0044] 1 - Monitoring device;

[0045] 11 - Housing; 111 - Accommodating cavity; 112 - Opening; 113 - Bottom wall; 114 - Accommodating groove;

[0046] 12 - Movable part; 121 - First surface; 122 - Second surface;

[0047] 13 - First elastic member;

[0048] 141 - Limiting member; 142 - Guide rod; 143 - Mounting plate;

[0049] 15 - Monitoring pipe;

[0050] 16 - Connecting seat; 161 - Mounting groove; 162 - Card slot; 163 - Through hole; 1631 - First through hole; 1632 - Second through hole;

[0051] 17 - Engaging assembly; 171 - Engaging part; 172 - Second elastic member;

[0052] 18 - Unlocking assembly; 181 - Pressing part; 182 - Unlocking rod;

[0053] 19 - Reset assembly; 191 - First limiting plate; 192 - Second limiting plate; 193 - Third limiting plate; 194 - Reset member;

[0054] 21 - First valve; 22 - Second valve; 23 - Diverging pipe. Detailed implementation manners

[0055] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0056] In this application, the terms "install", "set", "provided with", "connected", and "linked" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there can be internal communication between two devices, components, or parts. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0057] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, components, or parts (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, components, or parts. Unless otherwise specified, the meaning of "a plurality" is two or more.

[0058] The technical solutions of this application will be further described below in conjunction with specific embodiments and the accompanying drawings.

[0059] Please refer to Figure 1 , an embodiment of this application provides a monitoring device 1 for monitoring a pipeline for transporting natural gas. The monitoring device 1 includes a housing 11, a movable member 12, and a first elastic member 13. The housing 11 has a connected accommodation cavity 111 and an opening 112. The opening 112 is used to communicate with the pipeline to allow natural gas to flow into the accommodation cavity 111. The movable member 12 is movably arranged in the accommodation cavity 111. The first elastic member 13 is connected between the bottom wall 113 of the housing 11 and the movable member 12. The first elastic member 13 is configured such that when natural gas exerts different forces on the movable member 12, the first elastic member 13 pushes the movable member 12 to different preset positions.

[0060] Among them, the shape of the housing 11 can be a cylinder or a cuboid, etc., which is not limited herein. The first elastic member 13 can be a spring or other components that can exert an elastic force on the movable member 12, which is not limited herein. In the following embodiments and implementation manners, the first elastic member 13 will be described by taking a spring as an example.

[0061] Specifically, the movable member 12 has opposite first surface 121 and second surface 122. The first surface 121 faces the opening 112, and the second surface 122 faces the bottom wall 113 of the housing 11 that encloses the accommodation cavity 111. The opening 112 and the bottom wall 113 of the housing 11 that encloses the accommodation cavity 111 are disposed opposite to each other. The first surface 121 faces the opening 112, and the second surface 122 faces the bottom wall 113 of the housing 11 that encloses the accommodation cavity 111. The elastic force exerted by the first elastic member 13 on the movable member 12 is from the second surface 122 towards the first surface 121.

[0062] Exemplarily, the preset positions include a first position and a second position. When natural gas exerts a first acting force on the first surface 121 towards the second surface 122, the first elastic member 13 supports the movable member 12 at the first position. When natural gas exerts a second acting force on the first surface 121 towards the second surface 122, the first elastic member 13 pushes the movable member 12 to move to the second position. The first acting force is greater than the second acting force, and the second position is between the first position and the opening 112.

[0063] The working principle of the monitoring device 1 provided in this embodiment is that when the pipeline for transporting natural gas does not leak, the pressure in the pipeline is normal and remains substantially unchanged, so that the flow rate of natural gas in the pipeline remains substantially stable. In this case, when the natural gas in the pipeline flows through the opening 112 into the accommodating cavity 111, the first acting force exerted by the natural gas on the first surface 121 towards the second surface 122 also remains substantially unchanged. Then, the elastic force exerted by the first elastic member 13 on the movable member 12 is equal to the first acting force, maintaining the movable member 12 substantially at the first position.

[0064] When the pipeline for transporting natural gas leaks, the pressure in the pipeline drops, causing the flow rate of natural gas in the pipeline to decrease. In this case, when the natural gas in the pipeline flows through the opening 112 into the accommodating cavity 111, the second acting force exerted by the natural gas on the first surface 121 towards the second surface 122 is less than the first acting force. The first elastic member 13 elongates, so that the magnitude of the elastic force exerted on the movable member 12 decreases to be equal to the magnitude of the second acting force, and maintains the movable member 12 substantially at the second position.

[0065] It can be understood that when it is observed that the movable plate is substantially at the first position, it can be determined that there is no natural gas leakage in the pipeline. When it is observed that the movable plate is substantially at the second position, it can be determined that there is natural gas leakage in the pipeline, and timely maintenance is required.

[0066] In summary, the monitoring device 1 provided in the embodiment of the present application, compared with the prior art that monitors the pipeline through electronic components such as sensors, can extend the service life of the monitoring device 1 while monitoring whether there is natural gas leakage in the pipeline 15, and reduce the structural complexity of the monitoring device 1 and the monitoring cost.

[0067] Please continue to refer to Figure 1 , in some embodiments, the monitoring device 1 further includes a limiting member 141. The limiting member 141 is disposed in the accommodating cavity 111 and is used to limit the movable member 12 from detaching from the accommodating cavity 111 through the opening 112.

[0068] The limiting member can limit the movable member 12 from detaching from the accommodating cavity 111 through the opening 112, thereby ensuring the normal operation of the movable member 12, avoiding the failure of the movable member 12, and ensuring the stability and accuracy of the monitoring.

[0069] In some other embodiments, the limiting member 141 can also be disposed on the side wall of the housing 11 that encloses the accommodating cavity 111.

[0070] Exemplarily, in some embodiments, the limiting member 141 can be disposed at a third position, and the limiting member 141 is configured such that when the movable member 12 moves to the second position, the limiting member 141 abuts against the first surface 121.

[0071] When a pipeline for transporting natural gas leaks, the pressure inside the pipeline drops, causing the flow rate of natural gas inside the pipeline to decrease. When the natural gas inside the pipeline flows through the opening 112 into the accommodating cavity 111, the second force exerted by the natural gas on the first surface 121 towards the second surface 122 is less than the first force. The first elastic member 13 elongates and pushes the movable member 12 towards the opening 112 until the movable member 12 abuts against the limiting member 141. At this time, the movable member 12 is in the second position.

[0072] It should be noted that due to the limiting effect of the limiting member 141, when the movable member 12 is restricted to the second position, the elastic force exerted by the first elastic member 13 on the movable member 12 can be greater than the second force or equal to the second force, which is not limited herein.

[0073] In some other embodiments, the limiting member 141 can be disposed at a fourth position, and the limiting member 141 is configured such that when the movable member 12 moves to the second position, a gap is formed between the limiting member 141 and the first surface 121.

[0074] When a pipeline for transporting natural gas leaks, the pressure inside the pipeline drops, causing the flow rate of natural gas inside the pipeline to decrease. When the natural gas inside the pipeline flows through the opening 112 into the accommodating cavity 111, the second force exerted by the natural gas on the first surface 121 towards the second surface 122 is less than the first force. The first elastic member 13 elongates and pushes the movable member 12 towards the opening 112 until the movable member 12 is maintained at the second position. At this time, a gap still exists between the movable member 12 and the limiting member 141.

[0075] Please continue to refer to Figure 1 , in some more specific embodiments, the monitoring device 1 further includes a guide rod 142. One end of the guide rod 142 is connected to the bottom wall 113, and the other end is connected to the limiting member 141. The movable member 12 is sleeved on the guide rod 142 and can move along the axis of the guide rod 142.

[0076] It can be understood that when natural gas flows through the opening 112 into the accommodation chamber 111, the natural gas not only acts on the first surface 121 of the movable member 12, but may also act on the side surface of the movable member 12 connected to the first surface 121, causing the movable member 12 to be subjected to a force perpendicular to the orientation of the opening 112, thereby causing the movable member 12 to tilt and affecting the monitoring result. To solve this problem, in this embodiment, the movable member 12 is sleeved on the guide rod 142, so as to limit the movable member 12 to move only along the axis of the guide rod 142, prevent the movable member 12 from tilting, and avoid affecting the monitoring result.

[0077] In some other more specific embodiments, the side wall of the housing 11 that encloses the accommodation chamber 111 is provided with a slide rail, and the movable member 12 can move on the slide rail.

[0078] Please continue to refer to Figure 1 , in some embodiments, the monitoring device 1 further includes a mounting plate 143, the mounting plate 143 is detachably arranged on the bottom wall 113, and one end of the first elastic member 13 away from the movable member 12 is connected to the mounting plate 143.

[0079] In this embodiment, the end of the guide rod 142 away from the limiting member 141 can also be connected to the bottom wall 113 of the housing 11 that encloses the accommodation chamber 111 through the mounting plate 143, that is to say, both the guide rod 142 and the first elastic member 13 are indirectly connected to the inner wall of the housing 11 that encloses the accommodation chamber 111.

[0080] The mounting plate 143 is detachably arranged on the bottom wall 113, so as to facilitate the disassembly and assembly of the first elastic member 13 and the guide rod 142 and facilitate maintenance.

[0081] In some other embodiments, one end of the first elastic member 13 away from the movable member 12 can be directly connected to the inner wall of the housing 11.

[0082] In some embodiments, the housing 11 is provided with a plurality of scales (not shown in the figure), and the plurality of scales correspond to a plurality of preset positions one by one.

[0083] Exemplarily, the plurality of scales at least include a first scale and a second scale, the first scale corresponds to a first position, and the second scale corresponds to a second position. The first scale and the second scale can clearly reflect whether the movable member 12 is in the first position or the second position, so as to determine whether there is a natural gas leakage in the pipeline.

[0084] In some other embodiments, the housing 11 can also be provided with only one scale.

[0085] Please refer to Figure 2 , Figure 3 and Figure 4, in some embodiments, the monitoring device 1 further includes a monitoring pipe 15, a connecting seat 16, and a clamping assembly 17. One end of the monitoring pipe is used to communicate with the pipeline, the connecting seat 16 communicates with the other end of the monitoring pipe, the connecting seat 16 is provided with an installation groove 161 communicating with the monitoring pipe, and a clamping groove 162 is provided on the inner side wall of the connecting seat 16 surrounding the installation groove 161. The clamping assembly 17 includes a clamping member 171 and a second elastic member 172. The clamping member 171 is spaced from the outer side wall of the housing 11 and is used to cooperate with the clamping groove 162. The second elastic member 172 is connected between the clamping member 171 and the outer side wall of the housing 11 and applies an elastic force to the clamping member 171 away from the outer side wall of the housing 11.

[0086] Among them, the second elastic member 172 can be a spring or other components that can apply an elastic force to the clamping member 171, which is not limited herein. In the following embodiments and implementation manners, the second elastic member 172 is described by taking a spring as an example.

[0087] In this embodiment, the housing 11 is detachably arranged in the installation groove 161 through the clamping assembly 17, which can facilitate the disassembly and assembly of the housing 11. When the housing 11 is arranged in the installation groove 161, the second elastic member 172 is in a compressed state and applies an elastic force to the clamping member 171 away from the outer side wall of the housing 11 to clamp the clamping member 171 in the clamping groove 162, thereby installing the housing 11 in the installation groove 161; when the housing 11 is detached from the installation groove 161, the elastic force applied by the second elastic member 172 to the clamping member 171 is overcome, so that the clamping member 171 is disengaged from the clamping groove 162, thereby enabling the housing 11 to be detached from the installation groove 161.

[0088] It can be understood that in this embodiment, if the housing 11 is detached from the connecting seat 16, natural gas will leak from the installation groove 161. Please refer to Figure 5 , in this embodiment, a first valve 21 and a shunt pipe 23 with a second valve 22 can be arranged upstream of the connection position between the monitoring pipe and the pipeline. The first valve 21 is located between the shunt pipe 23 and the monitoring pipe. When the housing 11 is not detached from the connecting seat 16, the first valve 21 is in an open state and the second valve 22 is in a closed state, and natural gas flows normally in the pipeline; when preparing to detach the housing 11 from the connecting seat 16, the first valve 21 is switched from the open state to the closed state, and the second valve 22 is switched from the closed state to the open state, so that natural gas flows into the shunt pipe 23 to avoid the leakage of natural gas through the installation groove 161 of the connecting seat 16.

[0089] In some other embodiments, an interference fit is formed between the outer side wall of the housing 11 and the inner side wall of the connecting seat 16 surrounding the installation groove 161.

[0090] Please refer to Figure 4, in some embodiments, a receiving groove is provided on the outer sidewall of the housing 11. One end of the second elastic member 172 is connected to the bottom wall of the receiving groove, and the other end is connected to the engaging member 171.

[0091] The receiving groove can accommodate at least a part of the second elastic member 172, thereby reducing the distance between the engaging member 171 and the outer sidewall of the housing, facilitating the engagement or disengagement of the engaging member 171 with the card slot 162. At the same time, it can reduce the distance between the outer sidewall of the housing 11 and the inner sidewall of the mounting groove 161 formed by the connecting seat 16, so that an interference fit or an interference fit is formed between the outer sidewall of the housing and the inner sidewall of the mounting groove 161 formed by the connecting seat 16, thereby preventing natural gas from leaking between the outer sidewall of the housing 11 and the inner sidewall of the mounting groove 161 formed by the connecting seat 16.

[0092] In some other embodiments, the second elastic member 172 can also be provided on the outer sidewall of the housing.

[0093] Please refer to Figure 3 and Figure 4 , in some more specific embodiments, the connecting seat 16 is provided with a through hole 163, and the through hole 163 penetrates the inner wall of the card slot 162 to communicate with the card slot 162. The monitoring device 1 further includes an unlocking component 18 and a resetting component 19. The unlocking component 18 passes through the through hole 163 and can move along the axial direction of the through hole 163. The unlocking component 18 is configured to be able to push the engaging member 171 to overcome the elastic force to disengage from the card slot 162. The resetting component 19 is disposed in the through hole 163 and is used to reset the unlocking component 18.

[0094] When it is necessary to detach the housing 11 from the connecting seat 16, an acting force is applied to the unlocking component to overcome the resetting force applied by the resetting component 19 to the unlocking component 18, and extend into the card slot 162 to abut against the engaging member 171, thereby pushing the engaging member 171 to disengage from the card slot 162.

[0095] After the engaging member 171 disengages from the card slot 162, the acting force applied to the unlocking component is withdrawn. At this time, the resetting force applied by the resetting component 19 to the unlocking component 18 pushes the unlocking component to reset.

[0096] In some other more specific embodiments, the resetting component 19 can also be provided on the outer sidewall of the connecting seat 16.

[0097] In some embodiments, the through hole 163 includes a coaxial first through hole 1631 and a second through hole 1632, the second through hole 1632 is located between the first through hole 1631 and the slot 162, and the aperture of the first through hole 1631 is larger than the aperture of the second through hole 1632. The unlocking assembly 18 includes a pressing member 181 and an unlocking rod 182, the unlocking rod 182 is disposed through the first through hole 1631 and the second through hole 1632, one end of the unlocking rod 182 can push the engaging member 171 to overcome the elastic force to disengage from the slot 162; the pressing member 181 is connected to the other end of the unlocking rod 182, and the bottom wall of the first through hole 1631 can limit the pressing member 181.

[0098] When the shell 11 needs to be disassembled, the pressing piece 181 is pressed from the first through hole 1631 to the direction of the second through hole 1632, so that one end of the unlocking rod 182 away from the pressing piece 181 abuts against the side surface of the engaging piece 171 away from the second elastic piece 172, and the pressing piece 181 is continued to be pressed to overcome the elastic force applied by the second elastic piece 172 to the engaging piece 171, so that the engaging piece 171 is disengaged from the slot 162, thereby achieving the purpose of disassembling the shell 11.

[0099] The size of the pressing member 181 in the axial direction perpendicular to the through hole 163 may be larger than the aperture of the second through hole 1632 and smaller than the aperture of the first through hole 1631. When the pressing member 181 contacts the bottom wall of the first through hole 1631, the bottom wall of the first through hole 1631 may restrict the pressing member 181 from continuing to move, thereby restricting the unlocking rod 182 from continuing to move.

[0100] In some other more specific embodiments, the radius of the first through hole 1631 may be equal to the radius of the second through hole 1632 .

[0101] Please continue reading Figure 3 and Figure 4 In some more specific embodiments, the reset assembly 19 includes a first limit plate 191, a second limit plate 192, a third limit plate 193 and a reset member 194. The first limit plate 191 is disposed in the second through hole 1632. The second limit plate 192 is disposed in the second through hole 1632 and is located between the first limit plate 191 and the card slot 162, and the unlocking rod 182 is penetrated by the first limit plate 191 and the second limit plate 192. The third limit plate 193 is sleeved on the unlocking rod 182 and is located between the first limit plate 191 and the second limit plate 192. One end of the reset member 194 is connected between the second limit plate 192 and the third limit plate 193, and applies a reset force toward the first limit plate 191 to the third limit plate 193.

[0102] Among them, the reset member 194 can be a spring or other components that can apply an elastic force to the third limiting plate 193, which is not limited herein. In the following embodiments and implementation manners, the reset member 194 is described by taking a spring as an example.

[0103] In this embodiment, during the process of disassembling the housing 11, since the pressing member 181 drives the unlocking rod 182 to move from the first through hole 1631 towards the second through hole 1632, the third limiting plate 193 moves away from the first limiting plate 191, thereby compressing the reset member 194. When the housing 11 is detached from the installation groove 161, the reset force applied by the reset member 194 to the third limiting plate 193 pushes the third limiting plate 193 to move in the reverse direction until it abuts against the first limiting plate 191, so that the pressing member 181 and the unlocking rod 182 are reset.

[0104] In some other more specific embodiments, one end of the reset member 194 can also be connected to the pressing member 181, and the other end is connected to the bottom wall 113 of the first through hole 1631 facing the second through hole 1632.

[0105] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A monitoring device for monitoring a pipeline for transporting natural gas, characterized in that: include: A shell having a connected accommodating cavity and an opening, wherein the opening is used to connect with a pipeline so as to allow natural gas to flow into the accommodating cavity; a movable member, the movable member being movably disposed in the accommodating cavity; and A first elastic member, wherein the first elastic member is connected between the bottom wall of the shell and the movable member, and the first elastic member is configured such that when natural gas applies different forces to the movable member, the first elastic member pushes the movable member to a plurality of preset positions.

2. The monitoring device according to claim 1, characterized in that: It also includes a limiting member, which is arranged in the accommodating cavity and is used to limit the movable member from leaving the accommodating cavity through the opening.

3. The monitoring device according to claim 2, characterized in that: It also includes a guide rod, one end of which is connected to the bottom wall, and the other end is connected to the limiting member. The movable member is sleeved on the guide rod and can move along the axis of the guide rod.

4. The monitoring device according to any one of claims 1 to 3, characterized in that: It also includes a mounting plate, which is detachably arranged on the bottom wall, and one end of the first elastic member away from the movable member is connected to the mounting plate.

5. The monitoring device according to any one of claims 1 to 3, characterized in that: The housing is provided with a plurality of scales, and the plurality of scales correspond one-to-one to the plurality of preset positions.

6. The monitoring device according to any one of claims 1 to 3, characterized in that: Also includes: A monitoring tube, one end of which is used to connect to the pipeline; A connecting seat, the connecting seat is connected to the other end of the monitoring tube, the connecting seat is provided with a mounting groove connected to the monitoring tube, and the inner side wall of the connecting seat surrounding the mounting groove is provided with a clamping groove; as well as A snap-fit ​​assembly, the snap-fit ​​assembly comprising: A clamping piece, the clamping piece is spaced apart from the outer side wall of the shell and is used to cooperate with the clamping slot; as well as The second elastic member is connected between the engaging member and the outer side wall of the shell and applies an elastic force to the engaging member away from the outer side wall of the shell.

7. The monitoring device according to claim 6, characterized in that: The outer side wall of the shell is provided with a receiving groove, one end of the second elastic member is connected to the bottom wall of the receiving groove, and the other end is connected to the engaging member.

8. The monitoring device according to claim 6, characterized in that: The connecting seat is provided with a through hole, and the through hole passes through the inner wall of the card slot to communicate with the card slot; The monitoring device also includes: an unlocking assembly, the unlocking assembly being disposed through the through hole and being movable along the axial direction of the through hole, the unlocking assembly being configured to push the engaging member to overcome the elastic force so as to disengage from the engaging slot; and A reset component is arranged in the through hole and is used to reset the unlocking component.

9. The monitoring device according to claim 8, characterized in that: The through hole comprises a coaxial first through hole and a second through hole, the second through hole is located between the first through hole and the slot, and the aperture of the first through hole is larger than the aperture of the second through hole; The unlocking component comprises: an unlocking rod, wherein the unlocking rod is inserted into the first through hole and the second through hole, and one end of the unlocking rod can push the engaging member to overcome the elastic force to disengage from the engaging slot; and A pressing piece is connected to the other end of the unlocking rod, and the bottom wall of the first through hole can limit the pressing piece.

10. The monitoring device according to claim 9, characterized in that: The reset component comprises: a first limiting plate, wherein the first limiting plate is disposed in the second through hole; a second limiting plate, wherein the second limiting plate is disposed in the second through hole and is located between the first limiting plate and the card slot, and the unlocking rod is passed through the first limiting plate and the second limiting plate; a third limiting plate, the third limiting plate being sleeved on the unlocking rod and located between the first limiting plate and the second limiting plate; and A reset member, one end of which is connected between the second limit plate and the third limit plate, and applies a reset force to the third limit plate toward the first limit plate.

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