Synchronous action gas density monitoring device

Abstract

The invention provides a synchronous action gas density monitoring device, comprising: a fixed cylinder assembly, the fixed cylinder assembly comprising a fixedly arranged first outer cylinder, a first bellows arranged in the first outer cylinder and a first guide rod connected to the first bellows, the first outer cylinder is in conduction with the gas to be measured; a movable cylinder assembly, the movable cylinder assembly comprising a movably arranged second outer cylinder, a second bellows arranged in the second outer cylinder and a second guide rod connected to the second bellows, the second outer cylinder is in conduction with the gas to be measured; a rotatably arranged balance pendulum, one end of the balance pendulum is hinged to the first guide rod, the other end is hinged to the second guide rod, and the first outer cylinder and the second outer cylinder are symmetrically arranged about the rotation center of the balance pendulum; an action indicating assembly, the action indicating assembly comprising a transmission rod connected to the second outer cylinder at one end; the invention solves the problem in the prior art that the scale mark reading of a density measuring device with a split structure is difficult to adapt to the specific gas pressure that triggers a micro switch.

Description

Technical Field

[0001] The invention relates to the technical field of gas density monitoring, and in particular to a synchronous action gas density monitoring device. Background Art

[0002] Sulfur hexafluoride gas has good insulation and arc extinguishing functions. Various sulfur hexafluoride electrical equipment is widely used in power departments, industrial and mining enterprises. The density of sulfur hexafluoride gas is directly related to its insulation and arc extinguishing performance. Sulfur hexafluoride gas density measuring devices are usually used to monitor the changes in sulfur hexafluoride gas density in such equipment.

[0003] At present, most sulfur hexafluoride gas density measuring devices use spring tubes as pressure-sensitive elements. The sulfur hexafluoride gas to be measured is conducted at one end of the spring tube. When the sulfur hexafluoride gas density changes, the spring tube is deformed, and the other end of the spring tube moves, and the corresponding displacement is displayed by the pointer. The current sulfur hexafluoride gas pressure is obtained through the corresponding scale mark. In addition, a bellows is generally provided. The different pressures on the bellows when the sulfur hexafluoride gas density changes are used to push the bellows to expand and contract, thereby triggering a micro switch.

[0004] However, with the existence of errors and the different characteristics of the spring tube bellows, the density measuring device of the split structure often has the problem that the scale mark reading is inconsistent with the specific air pressure that triggers the micro switch, that is, sometimes the micro switch is triggered but the scale mark reading is not reached, or although the scale mark reading reaches the specific air pressure, the micro switch is not triggered; in this case, it is difficult for the user to judge whether the sulfur hexafluoride equipment has an abnormal operating condition, or to judge whether the problem is currently in the spring tube unit or the bellows unit; secondly, the temperature compensation of the bellows and the spring tube often adopts different schemes. For example, the spring tube often uses a temperature compensation element for temperature compensation, and the bellows is often set with another bellows to compensate for the influence of temperature. The above different temperature compensation schemes have inconsistent characteristics in different temperature ranges, which often lead to the problem of inconsistency between the scale mark reading and the triggering of the micro switch. Summary of the invention

[0005] In view of the shortcomings of the prior art mentioned above, the technical problem to be solved by the present invention is to provide a synchronous gas density monitoring device to solve the problem that the scale marking reading and the specific air pressure that triggers the micro switch are difficult to adapt due to the inconsistent characteristics of the trigger structure and the compensation structure of the split-structure density measuring device in the prior art.

[0006] In order to solve the above technical problems, the present invention provides a synchronous action gas density monitoring device, which is used to communicate with the gas to be measured, mark the current gas pressure of the gas to be measured, and trigger a corresponding action when the gas pressure of the gas to be measured reaches a certain value, including:

[0007] A fixed cylinder assembly, the fixed cylinder assembly comprising a first outer cylinder fixedly arranged, a first bellows arranged in the first outer cylinder, and a first guide rod connected to the first bellows, the first outer cylinder is in communication with the gas to be measured, a first air cavity is formed between the first bellows and the first outer cylinder, when the air pressure of the first air cavity changes, the first bellows is compressed or extended, driving the first guide rod to expand and contract along the axial direction of the first bellows;

[0008] A movable cylinder assembly, the movable cylinder assembly comprising a second outer cylinder movably arranged, a second bellows arranged in the second outer cylinder, and a second guide rod connected to the second bellows, the second outer cylinder is in conduction with the gas to be measured, a second air cavity is formed between the second bellows and the second outer cylinder, the compensating gas filled in the second air cavity is consistent with the type of the gas to be measured, when the air pressure of the second air cavity changes, the second bellows is compressed or extended, driving the second guide rod to expand and contract along the axial direction of the second bellows;

[0009] A rotatably arranged balancing pendulum, wherein one end of the balancing pendulum is hinged to the first guide rod, and the other end is hinged to the second guide rod, and the first outer cylinder and the second outer cylinder are symmetrically arranged about the rotation center of the balancing pendulum;

[0010] An action indicating component, the action indicating component comprises a transmission rod, a movement and a micro switch arranged corresponding to the transmission rod, the movement is provided with a pointer, one end of the transmission rod is connected to the second outer cylinder, and the other end is connected to the movement;

[0011] Under normal working conditions, changes in ambient temperature simultaneously cause changes in the air pressure in the first air cavity and the second air cavity, and the first bellows and the second bellows are compressed or extended simultaneously, thereby driving the first guide rod and the second guide rod to extend or contract simultaneously, the balance swing rod rotates, the second outer cylinder does not move, and the transmission rod does not move;

[0012] Under abnormal working conditions, the pressure of the gas to be measured changes, which drives the first bellows to compress or extend, causing the first guide rod to compress or extend, thereby driving the balance pendulum to rotate. Since the second guide rod does not move compared to the second bellows, the other end of the balance pendulum drives the second outer cylinder to move through the second guide rod and drives the transmission rod to move, thereby driving the pointer to move to identify the corresponding air pressure, and triggering the micro switch and triggering the corresponding action when the preset air pressure is reached.

[0013] As a more preferred method, fine-tuning the distance between one end and the other end of the balance rocker and the rotation center can realize the correction of the pointer change and the micro switch triggering position caused by the change of the gas pressure of the gas to be measured under abnormal working conditions.

[0014] As a more preferred embodiment, the action indicating component further comprises a dial, which is arranged between the movement and the pointer, and the corresponding position of the dial is marked with a scale of air pressure values, and the scale to which the pointer is aligned is the air pressure of the current gas to be measured.

[0015] As a more preferred embodiment, the synchronous gas density monitoring device further comprises a case and a window arranged on the case, and the pointer can be observed through the window to obtain the current gas pressure information of the gas to be measured.

[0016] As a more preferred embodiment, the synchronous gas density monitoring device further comprises a base for connecting to the gas to be measured, and the base is provided with a gas pipeline, and the gas pipeline is connected to the first gas cavity.

[0017] As a more preferred embodiment, the synchronous gas density monitoring device also includes an adjusting unit, which includes an adjusting block fixed to the other end of the transmission rod and an adjusting structure arranged on the adjusting block, and the adjusting structure is opposite to the micro switch, controlling the distance between the adjusting structure and the corresponding micro switch, thereby achieving the purpose of triggering the corresponding micro switch at a specific air pressure of the gas to be measured.

[0018] As a more preferred embodiment, the action indicating component includes a plurality of micro switches triggered at different pressures of the gas to be measured, and a plurality of adjustment structures are arranged on the adjustment block, and the spacing between the plurality of adjustment structures and the corresponding micro switches is adapted to the pressure of the gas to be measured that needs to be triggered.

[0019] As a more preferred embodiment, the adjustment structure includes an adjustment rod with one end arranged on the adjustment block and a cam rotatably arranged on the other end of the adjustment rod, the cam is used to trigger the micro switch, and the cam is rotated to adjust the distance between the cam contact surface and the micro switch.

[0020] As a more preferred embodiment, the balancing rocker is a straight rod.

[0021] As a more preferred embodiment, the fixed cylinder assembly also includes a first sealing end cover, one end of the first outer cylinder is sealed by the first sealing end cover, one end of the first bellows is fixed to the first sealing end cover, the first guide rod is connected to the other end of the first bellows, and the first sealing end cover is provided with a first through hole for the first guide rod to pass through; the movable cylinder assembly also includes a second sealing end cover, one end of the second outer cylinder is sealed by the second sealing end cover, one end of the second bellows is fixed to the second sealing end cover, the second guide rod is connected to the other end of the second bellows, and the second sealing end cover is provided with a second through hole for the second guide rod to pass through.

[0022] As a more preferred embodiment, the synchronous gas density monitoring device also includes a remote transmission unit, which includes a pressure sensor connected to the gas to be measured and a remote transmission control mainboard connected to the pressure sensor. The remote transmission control mainboard processes the pressure information of the gas to be measured based on the received electrical signal from the pressure sensor and transmits it to the outside.

[0023] As described above, the synchronous action gas density monitoring device of the present invention has the following beneficial effects:

[0024] First, when the synchronous action gas density monitoring device of the present invention is in use, the pressure of the gas to be measured changes, the first bellows is compressed or extended, and the first guide rod is driven to expand and contract along the axial direction of the first bellows; because the first guide rod is hinged to one end of the balance swing rod, the axial expansion and contraction of the first guide rod drives the balance swing rod to rotate along its rotation center, and then drives the movable second outer cylinder to move through the other end of the balance swing rod, and the transmission rod drives the pointer to indicate the current pressure of the gas to be measured and triggers the corresponding micro switch when the preset pressure is reached;

[0025] Secondly, under normal working conditions, changes in ambient temperature simultaneously cause changes in the air pressure in the first air cavity and the second air cavity, and the first bellows and the second bellows are compressed or extended at the same time. Specifically, when the first guide rod is extended or contracted, the balance swing rod rotates clockwise or counterclockwise under the drive of the first guide rod, and the other end of the swing rod pulls or pushes the second guide rod while rotating. However, at this time, the second guide rod is synchronously extended or contracted, and the length of the extension or contraction is consistent with that of the first guide rod. The distance by which the second guide rod is pulled or pushed is limited by its own The length of the extension or contraction is offset, so the second outer cylinder does not move, and the transmission rod does not move; under abnormal working conditions, the pressure of the gas to be measured changes, which drives the first bellows to compress or extend, causing the first guide rod to compress or extend, thereby driving the balance swing rod to rotate. Since the second guide rod does not move compared to the second bellows, the other end of the balance swing rod drives the second outer cylinder to move through the second guide rod and drives the transmission rod to move, thereby driving the pointer to move to identify the corresponding air pressure, and triggering the micro switch and the corresponding action when the preset air pressure is reached;

[0026] Moreover, by fine-tuning the distance between one end and the other end of the balancing pendulum from the rotation center, the torque at both ends of the balancing pendulum is fine-tuned according to the lever law, thereby fine-tuning the force of the first guide rod and the second guide rod connected to the two ends of the balancing pendulum, so as to achieve fine-tuning and correction of the pointer change caused by the pressure change of the gas to be measured and the triggering position of the micro switch under normal and abnormal working conditions;

[0027] In summary, the synchronous gas density monitoring device of the present invention synchronously drives the pointer and the micro switch to move through the transmission rod; at the same time, the lever structure is used to realize the synchronous fine-tuning and correction of the pointer change and the micro switch triggering position; it solves the problem in the prior art that the split-structure density measuring device is difficult to adapt the scale marking reading to the specific air pressure that triggers the micro switch due to the inconsistent characteristics of the trigger structure and the compensation structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram showing a synchronous gas density monitoring device according to the present invention from one perspective;

[0029] Figure 2 Shown is a schematic diagram of another viewing angle of the synchronous action gas density monitoring device of the present invention;

[0030] Figure 3 A schematic diagram showing another embodiment of the synchronous gas density monitoring device of the present invention;

[0031] Figure 4 Shown is a schematic diagram of an adjustment unit of a synchronously-acting gas density monitoring device according to the present invention.

[0032] Component number description

[0033] 1. Fixed cylinder assembly; 11. First outer cylinder; 12. First bellows; 13. First guide rod; 14. First sealing end cover; 15. First sealing bottom plate; 16. First elastic member; 2. Movable cylinder assembly; 21. Second outer cylinder; 22. Second bellows; 23. Second guide rod; 24. Second sealing end cover; 25. Second sealing bottom plate; 26. Second elastic member; 3. Balance pendulum; 4. Action indicating assembly; 41. Transmission rod; 42. Movement; 421. Pointer; 43. Micro switch; 44. Connecting rod; 5. Adjustment unit; 51. Adjustment block; 52. Adjustment structure; 521. Adjustment rod; 522. Cam; 6. Case; 61. Window; 62. Sealing ring; 63. Cover; 64. Dial; 7. Base; 71. Gas pipeline; 8. Terminal block; 9. Terminal box. DETAILED DESCRIPTION

[0034] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0035] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification, so that people familiar with this technology can understand and read them, and are not used to limit the limiting conditions that the present invention can implement, so they have no technical substantive significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope of the technical content disclosed by the present invention. The following detailed description should not be considered restrictive, and the scope of the embodiments of the present application is limited only by the claims of the published patents. The terms used here are only for describing specific embodiments and are not intended to limit the present application. Spatially related terms, such as "upper", "lower", "left", "right", "below", "below", "lower", "above", "upper", etc., can be used in the text to facilitate the description of the relationship between an element or feature shown in the figure and another element or feature.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix", "hold" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Furthermore, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless there is an indication to the contrary in the context. It should be further understood that the terms "comprise", "include" indicate the presence of the described features, operations, elements, components, items, kinds, and / or groups, but do not exclude the presence, occurrence or addition of one or more other features, operations, elements, components, items, kinds, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or mean any one or any combination. Therefore, "A, B or C" or "A, B and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C". Exceptions to this definition will only occur when the combination of elements, functions or operations is inherently mutually exclusive in some way.

[0038] like Figures 1 to 4 As shown, the present invention provides a synchronous action gas density monitoring device, which is used to communicate with the gas to be measured, mark the current gas pressure of the gas to be measured, and trigger a corresponding action when the gas pressure of the gas to be measured reaches a certain value, including:

[0039] A fixed cylinder assembly 1, the fixed cylinder assembly 1 comprising a first outer cylinder 11 fixedly arranged, a first bellows 12 arranged in the first outer cylinder 11, and a first guide rod 13 connected to the first bellows 12, the first outer cylinder 11 is in communication with the gas to be measured, a first air cavity is formed between the first bellows 12 and the first outer cylinder 11, when the air pressure of the first air cavity changes, the first bellows 12 is compressed or extended, driving the first guide rod 13 to expand and contract along the axial direction of the first bellows 12;

[0040] A movable cylinder assembly 2, the movable cylinder assembly 2 comprising a second outer cylinder 21 movably arranged, a second bellows 22 arranged in the second outer cylinder 21, and a second guide rod 23 connected to the second bellows 22, the second outer cylinder 21 is in conduction with the gas to be measured, a second air cavity is formed between the second bellows 22 and the second outer cylinder 21, the compensating gas filled in the second air cavity is consistent with the type of the gas to be measured, when the air pressure of the second air cavity changes, the second bellows 22 is compressed or extended, driving the second guide rod 23 to expand and contract along the axial direction of the second bellows 22;

[0041] A rotatably arranged balancing pendulum 3, wherein one end of the balancing pendulum 3 is hinged to the first guide rod 13, and the other end is hinged to the second guide rod 23, and the first outer cylinder 11 and the second outer cylinder 21 are symmetrically arranged about the rotation center of the balancing pendulum 3;

[0042] An action indicating component 4, the action indicating component 4 comprises a transmission rod 41, a movement 42 and a micro switch 43 arranged corresponding to the transmission rod 41, the movement 42 is provided with a pointer 421, one end of the transmission rod 41 is connected to the second outer tube 21, and the other end is connected to the movement 42;

[0043] Under normal working conditions, the change in ambient temperature causes the air pressure in the first air cavity and the second air cavity to change at the same time, and the first bellows 12 and the second bellows 22 are compressed or extended at the same time, thereby driving the first guide rod 13 and the second guide rod 23 to extend or contract at the same time, the balance swing rod 3 rotates, the second outer cylinder 21 does not move, and the transmission rod 41 does not move;

[0044] Under abnormal working conditions, the pressure of the gas to be measured changes, which drives the first bellows 12 to compress or extend, causing the first guide rod 13 to compress or extend, thereby driving the balance pendulum 3 to rotate. Since the second guide rod 23 does not move compared to the second bellows 22, the other end of the balance pendulum 3 drives the second outer cylinder 21 to move through the second guide rod 23 and drives the transmission rod 41 to move, thereby driving the pointer 421 to move to identify the corresponding air pressure, and triggering the micro switch 43 and triggering the corresponding action when the preset air pressure is reached.

[0045] In order to better introduce the synchronous action gas density monitoring device of the present invention, it is now explained in combination with the following specific applications. When the synchronous action gas density monitoring device of the present invention is in use, the pressure of the gas to be measured changes, and the first bellows 12 is compressed or extended, driving the first guide rod 13 to axially extend and retract along the first bellows 12; since the first guide rod 13 is hinged to one end of the balance pendulum 3, the axial extension and retraction of the first guide rod 13 drives the balance pendulum 3 to rotate along its rotation center, and then drives the movable second outer cylinder 21 to move through the other end of the balance pendulum 3, and the transmission rod 41 drives the pointer 421 to indicate the current pressure of the gas to be measured and triggers the corresponding micro switch 43 when the preset pressure is reached; secondly, under normal working conditions, The change in ambient temperature causes the air pressure in the first air cavity and the second air cavity to change at the same time, and the first bellows 12 and the second bellows 22 are compressed or extended at the same time, thereby driving the first guide rod 13 to extend or contract and the second guide rod 23 to extend or contract at the same time. Specifically, when the first guide rod 13 extends or contracts, the balancing pendulum 3 rotates clockwise or counterclockwise under the drive of the first guide rod 13, and the other end of the pendulum pulls or pushes the second guide rod 23 while rotating. However, at this time, the second guide rod 23 extends or contracts synchronously, and the length of the extension or contraction is consistent with that of the first guide rod 13. The distance by which the second guide rod 23 is pulled or pushed is offset by its own length of extension or contraction. The second outer cylinder 21 does not move, and the transmission rod 41 does not move; under abnormal working conditions, the pressure of the gas to be measured changes, which drives the first bellows 12 to compress or extend, causing the first guide rod 13 to compress or extend, thereby driving the balance pendulum 3 to rotate. Since the second guide rod 23 does not move compared to the second bellows 22, the other end of the balance pendulum 3 drives the second outer cylinder 21 to move through the second guide rod 23 and drives the transmission rod 41 to move, thereby driving the pointer 421 to move to mark the corresponding air pressure, and triggering the micro switch 43 and the corresponding action when the preset air pressure is reached; moreover, the distance between one end and the other end of the balance pendulum 3 and the rotation center is fine-tuned, and according to the lever law, the two ends of the balance pendulum 3 are fine-tuned. The torque of the synchronous action gas density monitoring device of the present invention can realize the fine adjustment and correction of the pointer 421 change and the triggering position of the micro switch 43 caused by the change of the gas pressure of the gas to be measured under normal and abnormal working conditions. It can be seen that the synchronous action gas density monitoring device of the present invention synchronously drives the pointer 421 and the micro switch 43 to move through the transmission rod 41; at the same time, the lever structure is used to realize the synchronous fine adjustment and correction of the pointer 421 change and the triggering position of the micro switch 43; the problem of the density measuring device of the split structure in the prior art that the scale mark reading is difficult to adapt to the specific gas pressure that triggers the micro switch 43 due to the inconsistent characteristics of the trigger structure and the compensation structure is solved.

[0046] In this embodiment, if Figure 1 As shown, the action indicating component 4 also includes a terminal board 8 and a terminal box 9 connected to the terminal board 8, the micro switch 43 is arranged on the terminal board 8, and when the terminal board 8 receives the electric signal triggered by the micro switch 43, the corresponding electric signal is transmitted to the terminal box 9, and after receiving the electric signal, the terminal box 9 processes the electric signal and transmits it to the outside; further, in this embodiment, the action indicating component 4 also includes a connecting rod 44, and the transmission rod 41 is connected to the movement 42 through the connecting rod 44.

[0047] In this embodiment, if Figure 1 As shown, the action indicating component 4 also includes a dial 64, which is arranged between the movement 42 and the pointer 421, and the corresponding position of the dial 64 is marked with a scale of air pressure value, and the scale aligned with the pointer 421 is the air pressure of the current gas to be measured; in this embodiment, the window 61 is arranged at the front end of the case 6, and the dial 64 is opposite to the window 61, and the window 61 can observe the scale on the dial 64 corresponding to the current pointer 421; further, the case 6 is also provided with a sealing ring 62 and a cover 63, the sealing ring 62 is arranged between the window 61 and the case 6, and the cover 63 presses the window 61 and the sealing ring 62 to the front end of the case 6.

[0048] In this embodiment, if Figure 2 As shown, the synchronous action gas density monitoring device further includes a case 6 and a window 61 arranged on the case 6, and the pointer 421 can be observed through the window 61, thereby obtaining the gas pressure information of the current gas to be measured.

[0049] In this embodiment, if Figure 1 As shown, the synchronous gas density monitoring device also includes a base 7 for connecting to the gas to be measured, and the base 7 is provided with a gas pipeline 71, and the gas pipeline 71 is connected to the first gas cavity; in this embodiment, the base 7 is fixed on the watch case 6.

[0050] In this embodiment, if Figure 1 As shown, the synchronous gas density monitoring device also includes an adjusting unit 5, which includes an adjusting block 51 fixed to the other end of the transmission rod 41 and an adjusting structure 52 arranged on the adjusting block 51, and the adjusting structure 52 is opposite to the micro switch 43, controlling the distance between the adjusting structure 52 and the corresponding micro switch 43, thereby achieving the purpose of triggering the corresponding micro switch 43 at a specific air pressure of the gas to be measured.

[0051] In this embodiment, if Figure 1As shown, the action indicating component 4 includes a plurality of micro switches 43 triggered at different gas pressures to be measured, and a plurality of adjustment structures 52 are arranged on the adjustment block 51, and the spacing between the plurality of adjustment structures 52 and the corresponding micro switches 43 is adapted to the size of the gas pressure to be measured that needs to be triggered.

[0052] In this embodiment, if Figure 4 As shown, the adjustment structure 52 includes an adjustment rod 521 with one end arranged on the adjustment block 51 and a cam 522 rotatably arranged at the other end of the adjustment rod 521, the cam 522 is used to trigger the micro switch 43, and the cam 522 is rotated to adjust the distance between the contact surface of the cam 522 and the micro switch 43; specifically, in this embodiment, a total of four micro switches 43 are arranged on the wiring board 8, and the four micro switches 43 are triggered in stages when the pressure of the corresponding gas to be measured reaches a preset first locking value, a second locking value, an alarm value and an overpressure alarm value. The first locking value, the second locking value, the alarm value and the overpressure alarm value are triggered in stages. The magnitude of the gas pressure to be measured corresponding to the alarm value and the overpressure alarm value increases in sequence; further, in this embodiment, the cam 522 also includes four, and the terminal board 8 is arranged on the side of the adjustment block 51 close to the first transmission rod 41, when the transmission rod 41 is extended, the cam 522 is away from the corresponding micro switch 43, and when the transmission rod 41 is retracted, the cam 522 moves toward the corresponding micro switch 43, so in the initial state, the micro switch 43 corresponding to the alarm value and the overpressure alarm value contacts the corresponding cam 522, and the micro switch 43 corresponding to the first locking value and the second locking value is provided with a cam 522 The rotation position of the cam 522 is adapted to the size of the set specific gas pressure to be measured; when an abnormal operating condition such as gas leakage causes the pressure of the gas to be measured to drop, the pressure of the gas to be measured first drops to the second locking value, and the transmission rod 41 retracts to drive the cam 522 to press the micro switch 43 corresponding to the second locking value, triggering the corresponding second locking signal; if the gas leakage continues, the pressure of the gas to be measured drops to the first locking value, and the transmission rod 41 continues to retract to drive the cam 522 to press the micro switch 43 corresponding to the first locking value, triggering the corresponding first locking signal; if the abnormal operating condition causes the pressure of the gas to be measured to rise, the pressure of the gas to be measured rises to When the pressure of the gas to be measured continues to rise, the pressure of the gas to be measured rises to the overpressure alarm value, and the transmission rod 41 continues to extend to drive the cam 522 to disengage from the corresponding microswitch 43, triggering the corresponding overpressure alarm model; similarly, when the terminal block 8 is arranged on the other side of the adjustment block 51, the spacing arrangement idea of ​​the microswitch 43 and the corresponding cam 522 is consistent with the above, and only whether the signal is triggered by pressing the microswitch 43 or disengaging from the microswitch 43 requires adaptive adjustment, which will not be repeated here.

[0053] In this embodiment, if Figure 1 as well as Figure 3 As shown, the balancing pendulum 3 is a straight rod, which can more conveniently adjust the distance between the rotation point and the two ends according to the lever principle, so as to more conveniently realize the change of the pointer 421 caused by the change of air pressure and the fine adjustment and correction of the triggering position of the micro switch 43; further, in this embodiment, the balancing pendulum 3 can also be a right-angle rod or other shapes, such as Figure 3 As shown, it is only necessary to ensure that the two ends move synchronously the same distance when rotating.

[0054] As a more preferred embodiment, the fixed cylinder assembly 1 also includes a first sealing end cover 14, one end of the first outer cylinder 11 is sealed by the first sealing end cover 14, one end of the first bellows 12 is fixed to the first sealing end cover 14, the first guide rod 13 is connected to the other end of the first bellows 12, and the first sealing end cover 14 is provided with a first through hole for the first guide rod 13 to pass through; the movable cylinder assembly 2 also includes a second sealing end cover 24, one end of the second outer cylinder 21 is sealed by the second sealing end cover 24, one end of the second bellows 22 is fixed to the second sealing end cover 24, the second guide rod 23 is connected to the other end of the second bellows 22, and the second sealing end cover 24 is provided with a second through hole for the second guide rod 23 to pass through.

[0055] Furthermore, in the present embodiment, the fixed cylinder assembly 1 also includes a first sealing bottom plate 15, the other end of the first bellows 12 is sealed by the first sealing bottom plate 15, one end of the first guide rod 13 is fixed to the first sealing bottom plate 15, and the other end is hinged to one end of the balance rocker 3; the movable cylinder assembly 2 also includes a second sealing bottom plate 25, the other end of the second bellows 22 is sealed by the second sealing bottom plate 25, one end of the second guide rod 23 is fixed to the second sealing bottom plate 25, and the other end is hinged to the other end of the balance rocker 3.

[0056] Further, in this embodiment, the fixed cylinder assembly 1 also includes a first elastic member 16, the first elastic member 16 is sleeved on the first guide rod 13, and one end of the first elastic member 16 is connected to the first sealing bottom plate 15, and the other end is connected to the first sealing end cover 14. When the pressure of the gas to be measured changes, the first bellows 12 overcomes the elastic force of the first elastic member 16 to compress or stretch, and when the factors affecting the change of the pressure of the gas to be measured disappear, the first elastic member 16 assists the first bellows 12 to return to normal; further, in this embodiment, the movable cylinder The component 2 also includes a second elastic member 26, which is sleeved on the second guide rod 23, and one end of the second elastic member 26 is connected to the second sealing bottom plate 25, and the other end is connected to the second sealing end cover 24. When the pressure of the compensating gas changes, the second bellows 22 overcomes the elastic force of the second elastic member 26 to compress or stretch, and when the factors affecting the pressure change of the gas to be measured disappear, the second elastic member 26 assists the second bellows 22 to return to the normal state; further, in this embodiment, the first elastic member 16 and the second elastic member 26 can be springs.

[0057] In this embodiment, the first outer cylinder 11 of the fixed cylinder assembly 1 is fixed in the watch case 6, and the second outer cylinder 21 of the movable cylinder assembly 2 is movably disposed in the watch case 6, and the second outer cylinder 21 can reciprocate along its axial direction.

[0058] In this embodiment, the synchronous gas density monitoring device also includes a remote transmission unit, which includes a pressure sensor connected to the gas to be measured and a remote transmission control mainboard connected to the pressure sensor. The remote transmission control mainboard processes the pressure information of the gas to be measured based on the received electrical signal from the pressure sensor and transmits it to the outside.

[0059] As described above, the synchronous action gas density monitoring device of the present invention has the following beneficial effects:

[0060] 1. Synchronous monitoring and response: Through the design of the fixed cylinder assembly 1 and the movable cylinder assembly 2, the synchronous monitoring and response of the gas pressure to be measured are achieved.

[0061] 2. Ambient temperature compensation: The compensation gas filled in the second gas cavity is consistent with the type of gas to be measured, which effectively compensates for the impact of ambient temperature changes on air pressure monitoring.

[0062] 3. Application of the lever principle: By utilizing the lever principle of the balancing rocker arm 3 and the synchronous action of the first guide rod 13 and the second guide rod 23, the sensitivity and accuracy of the monitoring device are improved.

[0063] 4. Fine-tuning and correction function: By fine-tuning the distance between the two ends of the balancing pendulum 3, the change of the pointer 421 caused by the change of the gas pressure to be measured and the fine-tuning and correction of the triggering position of the micro switch 43 are achieved.

[0064] 5. Integration of the action indicating component 4: The transmission rod 41, the movement 42 and the micro switch 43 are integrated to realize the intuitive display of the air pressure and the automatic triggering when the preset air pressure is reached.

[0065] 6. Sealing performance optimization: The design of the first sealing end cover 14 and the second sealing end cover 24 improves the sealing performance of the monitoring device and ensures the accuracy of the measurement.

[0066] 7. Elastic member assists in returning to the correct position: The application of the first elastic member 16 and the second elastic member 26 assists the bellows in returning to the correct position when the factors affecting the air pressure change disappear, thereby improving the stability of the measurement.

[0067] 8. Remote transmission unit integration: The integration of air pressure sensor and remote transmission control mainboard realizes the remote transmission and processing of the air pressure information of the gas to be tested.

[0068] 9. Design of the adjustment unit 5: The addition of the adjustment unit 5 allows the user to adjust the triggering air pressure of the micro switch 43 as required, thereby improving the flexibility of the monitoring device.

[0069] 10. Design of the window 61 and the dial 64: Through the design of the window 61 and the dial 64, the user can intuitively observe the pointer 421 and the scale to obtain the current pressure information of the gas to be tested.

[0070] 11. Multiple micro switches 43 design: The design of multiple micro switches 43 allows different actions to be triggered under different gas pressures to be measured, thereby improving the versatility of the monitoring device.

[0071] The synchronous action gas density monitoring device of this patent achieves high-precision monitoring and response of the gas pressure to be measured through its innovative design. The synchronous action design of the fixed cylinder assembly 1 and the movable cylinder assembly 2, combined with the lever principle of the balance rocker 3, improves the sensitivity and accuracy of the monitoring device. The ambient temperature compensation mechanism ensures the stability of the measurement results. The fine-tuning and correction functions further improve the flexibility and reliability of the monitoring device. The optimization of sealing performance and the application of elastic parts improve the stability and accuracy of the measurement. The integration of the remote transmission unit allows the air pressure information to be transmitted and processed remotely, expanding the application range of the monitoring device. Overall, the monitoring device of this patent solves the problem of unifying the scale marking reading and the specific air pressure that triggers the micro switch 43 in the split-structure density measuring device in the prior art, and provides an efficient, accurate and easy-to-adjust gas density monitoring solution.

[0072] Therefore, the present invention effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

[0073] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A synchronous action gas density monitoring device, used to communicate with the gas to be measured, mark the current gas pressure of the gas to be measured, and trigger a corresponding action when the gas pressure of the gas to be measured reaches a certain value, characterized in that: include: A fixed cylinder assembly (1), the fixed cylinder assembly (1) comprising a first outer cylinder (11) fixedly arranged, a first bellows (12) arranged in the first outer cylinder (11), and a first guide rod (13) connected to the first bellows (12), the first outer cylinder (11) being in communication with the gas to be measured, a first air cavity being formed between the first bellows (12) and the first outer cylinder (11), and when the air pressure in the first air cavity changes, the first bellows (12) is compressed or extended, driving the first guide rod (13) to expand and contract axially along the first bellows (12); A movable cylinder assembly (2), the movable cylinder assembly (2) comprising a second outer cylinder (21) movably arranged, a second bellows (22) arranged in the second outer cylinder (21), and a second guide rod (23) connected to the second bellows (22), the second outer cylinder (21) being in conduction with the gas to be measured, a second air cavity being formed between the second bellows (22) and the second outer cylinder (21), the compensating gas filled in the second air cavity being of the same type as the gas to be measured, and when the air pressure in the second air cavity changes, the second bellows (22) is compressed or extended, driving the second guide rod (23) to extend and retract along the axial direction of the second bellows (22); A rotatably arranged balancing swing rod (3), one end of the balancing swing rod (3) being hinged to a first guide rod (13), and the other end of the balancing swing rod (3) being hinged to a second guide rod (23), and the first outer cylinder (11) and the second outer cylinder (21) being symmetrically arranged about the rotation center of the balancing swing rod (3); An action indicating assembly (4), the action indicating assembly (4) comprising a transmission rod (41), a movement (42), a dial (64), and a micro switch (43) arranged corresponding to the transmission rod (41), the movement (42) being provided with a pointer (421), one end of the transmission rod (41) being connected to the second outer tube (21), and the other end being connected to the movement (42), the dial (64) being arranged between the movement (42) and the pointer (421); Under normal working conditions, changes in ambient temperature simultaneously cause changes in the air pressure in the first air cavity and the second air cavity, and the first bellows (12) and the second bellows (22) are compressed or extended simultaneously, thereby driving the first guide rod (13) and the second guide rod (23) to extend or contract simultaneously, the balancing swing rod (3) rotates, the second outer cylinder (21) does not move, and the transmission rod (41) does not move; Under abnormal working conditions, the pressure of the gas to be measured changes, which drives the first bellows (12) to compress or extend, causing the first guide rod (13) to compress or extend, thereby driving the balance swing arm (3) to rotate. Since the second guide rod (23) does not move compared to the second bellows (22), the other end of the balance swing arm (3) drives the second outer cylinder (21) to move through the second guide rod (23) and drives the transmission rod (41) to move, thereby driving the pointer (421) to move to identify the corresponding air pressure, and triggering the micro switch (43) and triggering the corresponding action when the preset air pressure is reached.

2. The synchronous action gas density monitoring device according to claim 1 is characterized in that: A scale indicating the air pressure value is marked on a corresponding position of the dial (64), and the scale to which the pointer (421) is aligned is the air pressure of the gas to be measured at present.

3. The synchronous action gas density monitoring device according to claim 1, characterized in that: The synchronous action gas density monitoring device further comprises a watch case (6) and a window (61) arranged on the watch case (6), and a pointer (421) can be observed through the window (61), thereby obtaining the current gas pressure information of the gas to be measured.

4. The synchronous action gas density monitoring device according to claim 1 is characterized in that: The synchronous action gas density monitoring device further comprises a base (7) for connecting to the gas to be measured, wherein the base (7) is provided with a gas delivery pipeline (71), and the gas delivery pipeline (71) is connected to the first gas cavity.

5. The synchronous action gas density monitoring device according to claim 1, characterized in that: The synchronous action gas density monitoring device further comprises an adjustment unit (5), the adjustment unit (5) comprising an adjustment block (51) fixed to the other end of the transmission rod (41) and an adjustment structure (52) arranged on the adjustment block (51), the adjustment structure (52) facing the micro switch (43), controlling the distance between the adjustment structure (52) and the corresponding micro switch (43), thereby achieving the purpose of triggering the corresponding micro switch (43) at a specific gas pressure of the gas to be measured.

6. The synchronous action gas density monitoring device according to claim 5, characterized in that: The action indicating component (4) comprises a plurality of micro switches (43) triggered at different gas pressures to be measured, and the regulating block (51) is provided with a plurality of regulating structures (52), and the spacing between the plurality of regulating structures (52) and the corresponding micro switches (43) is adapted to the magnitude of the gas pressure to be measured that needs to be triggered.

7. The synchronous action gas density monitoring device according to claim 6, characterized in that: The adjustment structure (52) comprises an adjustment rod (521) with one end arranged on the adjustment block (51) and a cam (522) rotatably arranged on the other end of the adjustment rod (521); the cam (522) is used to trigger the micro switch (43); and the cam (522) is rotated to adjust the distance between the contact surface of the cam (522) and the micro switch (43).

8. The synchronous action gas density monitoring device according to claim 1, characterized in that: The balancing pendulum rod (3) is a straight rod.

9. The synchronous action gas density monitoring device according to claim 1, characterized in that: The fixed cylinder assembly (1) further comprises a first sealing end cover (14), one end of the first outer cylinder (11) is sealed by the first sealing end cover (14), one end of the first bellows (12) is fixed to the first sealing end cover (14), the first guide rod (13) is connected to the other end of the first bellows (12), and the first sealing end cover (14) is provided with a first through hole for the first guide rod (13) to pass through; the movable cylinder assembly (2) further comprises a second sealing end cover (24), one end of the second outer cylinder (21) is sealed by the second sealing end cover (24), one end of the second bellows (22) is fixed to the second sealing end cover (24), the second guide rod (23) is connected to the other end of the second bellows (22), and the second sealing end cover (24) is provided with a second through hole for the second guide rod (23) to pass through.

10. The synchronous action gas density monitoring device according to claim 1, characterized in that: The synchronous action gas density monitoring device also includes a remote transmission unit, which includes a pressure sensor connected to the gas to be measured and a remote transmission control mainboard connected to the pressure sensor. The remote transmission control mainboard processes the pressure information of the gas to be measured based on the received electrical signal from the pressure sensor and transmits it to the outside.

Images