A piezoelectric sensor device for monitoring refrigerant leakage in a refrigeration system

Abstract

The present invention relates to the field of refrigerant leakage monitoring technology, and discloses a piezoelectric sensor device for monitoring refrigerant leakage in a refrigeration system, comprising a refrigeration pipe and a piezoelectric sensor body, wherein the refrigeration pipe is fixedly sleeved inside a second interface in a connection assembly, and an end of the second interface away from the refrigeration pipe is fixedly connected to a first interface, and a blocking block is arranged inside the first interface. Through the arrangement of the connection assembly, when the piezoelectric sensor body is disassembled and assembled, by driving the rotating plate to rotate, not only the connecting through holes provided on the blocking block and the rubber sealing block are dislocated with the connecting through holes provided on the second interface, so that the refrigerant gas inside the second interface can be temporarily prevented from entering the first interface, and after the blocking block completes the rotation, the rubber sealing block can more closely form contact with the bottom surface of the second interface, so that the portion of the rubber sealing block without the connecting through hole completes the blocking effect on the connecting through hole provided on the second interface.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigerant leakage monitoring, and in particular to a piezoelectric sensor device for monitoring refrigerant leakage in a refrigeration system. Background Art

[0002] Piezoelectric sensors are commonly used to monitor refrigerant gas leaks, and the use of piezoelectric sensors to monitor refrigerant gas mainly relies on the characteristics and technical applications of piezoelectric pressure sensors. Piezoelectric pressure sensors have high sensitivity, high precision, high reliability, strong anti-interference ability, and the ability to withstand high temperature and high pressure, which makes them an ideal choice for monitoring refrigerant gas.

[0003] In the prior art, for the connection between a piezoelectric sensor and a refrigerant pipe, generally the piezoelectric sensor is directly connected to the refrigerant pipe after wiring. Although this connection method does not affect the piezoelectric sensor's work of monitoring refrigerant gas leakage, if the piezoelectric sensor is damaged and needs to be repaired or replaced, this connection method may cause the refrigerant gas to leak from the inside of the refrigerant pipe after the piezoelectric sensor is removed.

[0004] Therefore, the existing needs are not met, and we propose a piezoelectric sensor device for monitoring refrigerant leakage in a refrigeration system. Summary of the invention

[0005] The present invention provides a piezoelectric sensor device for monitoring refrigerant leakage in a refrigeration system. The device has a function of allowing the piezoelectric sensor body to rotate by driving a rotating plate when being disassembled and assembled, thereby not only allowing the connecting through holes provided on the sealing block and the rubber sealing block to be misaligned with the connecting through holes provided on the first interface, thereby preventing the refrigerant gas inside the first interface from temporarily entering the inside of the second interface, but also allowing the rubber sealing block to more closely contact the bottom surface of the first interface after the sealing block completes its rotation, thereby allowing the portion of the rubber sealing block without the connecting through hole to complete the beneficial effect of sealing the connecting through hole provided on the first interface, thereby solving the problems mentioned in the above-mentioned background technology.

[0006] The present invention provides the following technical solution: a piezoelectric sensor device for monitoring refrigerant leakage in a refrigeration system, comprising a refrigeration pipe and a piezoelectric sensor body, wherein the refrigeration pipe is fixedly sleeved inside a second interface in a connection assembly, and the refrigeration pipe is connected to the second interface, and an end of the second interface away from the refrigeration pipe is fixedly connected to a first interface, a blocking block is arranged inside the first interface, one end of two connecting sliders is fixedly connected to the outer surface of the blocking block, and the other ends of the two connecting sliders are slidably arranged inside a first rotating groove, and the first rotating groove is opened on the inner wall of the first interface;

[0007] The first rotating groove is composed of a first moving station, a second moving station and a third moving station, and a third rotating groove is also opened on the inner wall of one side of the first rotating groove, and a connecting groove is opened on the first interface, and an accommodating cavity is also opened inside the blocking block, and an inner core rotating block is slidably arranged inside the accommodating cavity.

[0008] As an optional solution of the piezoelectric sensor device for monitoring refrigerant leakage in a refrigeration system described in the present invention, a second arc-shaped slide groove is provided on the top surface of the inner core rotating block, and an arc-shaped track groove is also provided on the bottom surface of the second arc-shaped slide groove, and an extrusion block is slidably arranged inside the second arc-shaped slide groove.

[0009] As an optional solution of a piezoelectric sensor device for monitoring refrigerant leakage in a refrigeration system described in the present invention, the bottom surface of the extrusion block is fixedly connected to one end of the third connecting rod, and the other end of the third connecting rod is set inside the arc track groove through a ball sliding.

[0010] As an optional solution of a piezoelectric sensor device for monitoring refrigerant leakage in a refrigeration system described in the present invention, wherein: the inner core rotating block, the sealing block and the connecting bottom plate are all provided with a first arc-shaped groove, the connecting bottom plate is fixedly set on the bottom surface of the sealing block, one end of a first connecting rod is slidably set inside the first arc-shaped groove provided in the inner core rotating block, the sealing block and the connecting bottom plate, and a fixed connection is formed between one end of the first connecting rod and the inner core rotating block, the sealing block is also provided with an arc-shaped groove, and a limiting flap is also provided inside the arc-shaped groove, and one end of a limiting strip is also slidably set inside the arc-shaped groove, and the other end of the limiting strip is fixedly set on the inner core rotating block.

[0011] As an optional solution of the piezoelectric sensor device for monitoring refrigerant leakage in a refrigeration system described in the present invention, the limit flap is rotatably arranged on a movable seat by a rotating rod, and a torsion spring is also arranged between the movable seat and the limit flap, and the torsion spring is sleeved on the rotating rod.

[0012] As an optional solution of the piezoelectric sensor device for monitoring refrigerant leakage in a refrigeration system described in the present invention, wherein: the movable seat is arranged inside the arc groove, the movable seat is slidably arranged inside the corresponding movable groove through a slider, the movable groove is opened on the inner wall of the arc groove, and a connecting spring is also arranged between the movable groove and the slider.

[0013] As an optional solution of the piezoelectric sensor device for monitoring refrigerant leakage in a refrigeration system described in the present invention, a fixed connection is formed between the top surface of the movable seat and the extrusion movable block, and the extrusion movable block is also in contact with one end of the second connecting rod, and the other end of the second connecting rod is set inside the third rotating groove through a ball sliding.

[0014] As an optional solution of a piezoelectric sensor device for monitoring refrigerant leakage in a refrigeration system described in the present invention, the other end of the first connecting rod is slidably set on a rotating plate, and the rotating plate is slidably set inside a second rotating groove through a corresponding slider, and the second rotating groove is opened on the inner wall of the first interface, and two connecting holes are also opened on the bottom surface of the rotating plate.

[0015] As an optional solution of the piezoelectric sensor device for monitoring refrigerant leakage in a refrigeration system described in the present invention, the piezoelectric sensor body is fixedly provided with an electrical connector, two connecting rods are fixedly provided on the front end surface of the electrical connector, a threaded interface is also provided on the surface of the electrical connector, and a threaded groove is provided on the first interface corresponding to the shape of the threaded interface.

[0016] As an optional solution of the piezoelectric sensor device for monitoring refrigerant leakage in a refrigeration system described in the present invention, a rubber sealing block is fixedly arranged on the top of the sealing block, a fixed connection is formed between the bottom surface of the rubber sealing block and the top surface of the extrusion block, the sealing block, the rubber sealing block, the inner core rotating block and the connecting bottom plate are all provided with connecting through holes, and the connecting bottom plate is also provided with a first arc-shaped sliding groove.

[0017] The present invention has the following beneficial effects:

[0018] 1. The piezoelectric sensor device for monitoring refrigerant leakage in a refrigeration system can not only effectively and quickly complete the disassembly and assembly of the piezoelectric sensor body through the setting of the connecting component, but also drive the rotating plate to rotate during the disassembly and assembly of the piezoelectric sensor body, so that the inner core rotating block, the blocking block and the rubber sealing block can all rotate accordingly. This rotation not only allows the connecting through holes opened on the blocking block, the rubber sealing block and the connecting bottom plate to complete the misalignment with the connecting through holes opened on the second interface, so that the refrigerant gas inside the second interface can temporarily be unable to enter the first interface. After the blocking block completes the rotation, the blocking block and the rubber sealing block will also move upward further, so that the rubber sealing block can be more closely in contact with the bottom surface of the second interface, and then the part of the rubber sealing block without the connecting through hole completes the sealing effect of the connecting through hole opened on the second interface, thereby further reducing the occurrence of refrigerant gas entering the first interface.

[0019] 2. The piezoelectric sensor device for monitoring refrigerant leakage in a refrigeration system allows the inner core rotating block to continue to rotate after the sealing block stops moving, so that the extrusion block can squeeze the rubber sealing block accordingly, so that the rubber sealing block can seal the connecting through hole of the first interface more tightly, and when the piezoelectric sensor body is installed again later, the rotating plate can also be rotated in the opposite direction, so that the inner core rotating block and the sealing block can be reset accordingly, thereby releasing the blockage of the connecting through hole of the second interface, and then allowing the refrigerant gas inside the second interface to circulate inside the first interface again, so that the installed piezoelectric sensor body can monitor the refrigerant gas again. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 It is a bottom view structural diagram of the second interface of the present invention.

[0022] Figure 3 It is a schematic diagram of the partial second interface section structure of the present invention.

[0023] Figure 4 It is a schematic diagram of the internal structure of the first interface of the present invention.

[0024] Figure 5 It is a schematic diagram of the internal cross-sectional structure of the first interface of the present invention.

[0025] Figure 6 It is a schematic diagram of the top-down section structure of the first interface of the present invention.

[0026] Figure 7 It is a schematic diagram of the top view structure of the inner core rotating block of the present invention.

[0027] Figure 8 It is a schematic diagram of the cross-sectional structure of a partial inner core transfer block of the present invention.

[0028] Fig. 9 It is a schematic diagram of the structure of the local blocking block of the present invention when viewed from above.

[0029] Fig.10 It is a schematic diagram of the cross-section structure of the partially connected bottom plate of the present invention.

[0030] Fig.11 It is a schematic diagram of the structure of the piezoelectric sensor body of the present invention.

[0031] In the figure: 1. Refrigeration pipeline; 2. Piezoelectric sensor body; 3. Connection components;

[0032] 201, electrical connector; 202, connecting rod; 203, threaded interface;

[0033] 301, first interface; 302, second interface; 303, rotating plate; 304, connecting jack; 305, threaded groove; 306, first connecting rod; 307, first arc-shaped slide groove; 308, connecting bottom plate; 309, blocking block; 310, rubber sealing block; 311, inner core rotating block; 312, extrusion block; 313, connecting through hole; 314, accommodating cavity; 315, first rotating groove; 316, second rotating groove; 317, third rotating groove Groove; 318, first moving station; 319, second moving station; 320, third moving station; 321, second arc-shaped slide groove; 322, arc-shaped track groove; 323, second connecting rod; 324, limit flap; 326, moving seat; 327, moving slide groove; 328, connecting spring; 329, extrusion moving block; 330, connecting slider; 331, third connecting rod; 332, arc-shaped groove; 333, limit strip; 334, connecting groove. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] For example, see Figure 1-Figure 10 A piezoelectric sensor device for monitoring refrigerant leakage in a refrigeration system comprises a refrigeration pipe 1 and a piezoelectric sensor body 2. The refrigeration pipe 1 is fixedly sleeved inside a second interface 302 in a connection assembly 3, and the refrigeration pipe 1 is communicated with the second interface 302. An end of the second interface 302 away from the refrigeration pipe 1 is fixedly connected to a first interface 301. A blocking block 309 is arranged inside the first interface 301. One end of two connecting sliders 330 is fixedly connected to the outer surface of the blocking block 309. The other ends of the two connecting sliders 330 are slidably arranged inside a first rotating groove 315. The first rotating groove 315 is arranged on the inner wall of the first interface 301.

[0036] The first rotating groove 315 is composed of a first moving station 318, a second moving station 319 and a third moving station 320, and a third rotating groove 317 is also opened on the inner wall of one side of the first rotating groove 315, and a connecting groove 334 is opened on the first interface 301, and an accommodating cavity 314 is also opened inside the blocking block 309, and an inner core rotating block 311 is slidably arranged inside the accommodating cavity 314.

[0037] A first arc-shaped groove 307 is provided on the inner core rotating block 311, the blocking block 309 and the connecting bottom plate 308. The connecting bottom plate 308 is fixedly arranged on the bottom surface of the blocking block 309. One end of the first connecting rod 306 is slidably arranged inside the first arc-shaped groove 307 provided on the inner core rotating block 311, the blocking block 309 and the connecting bottom plate 308, and a fixed connection is formed between one end of the first connecting rod 306 and the inner core rotating block 311. An arc-shaped groove 332 is also provided on the blocking block 309, and a limiting flap 324 is also provided inside the arc-shaped groove 332, and one end of a limiting strip 333 is slidably arranged inside the arc-shaped groove 332, and the other end of the limiting strip 333 is fixedly arranged on the inner core rotating block 311.

[0038] The limiting flap 324 is rotatably disposed on the moving seat 326 via a rotating rod, and a torsion spring is further disposed between the moving seat 326 and the limiting flap 324 , and the torsion spring is sleeved on the rotating rod.

[0039] The movable seat 326 is arranged inside the arc groove 332. The movable seat 326 is slidably arranged inside the corresponding movable groove 327 through a slider. The movable groove 327 is opened at the inner wall of the arc groove 332. A connecting spring 328 is also arranged between the movable groove 327 and the slider.

[0040] A top surface of the movable seat 326 is fixedly connected to the extrusion movable block 329 , and the extrusion movable block 329 is also in contact with one end of the second connecting rod 323 , and the other end of the second connecting rod 323 is slidably arranged inside the third rotating groove 317 via a ball bearing.

[0041] The other end of the first connecting rod 306 is slidably set on the rotating plate 303, and the rotating plate 303 is slidably set inside the second rotating groove 316 through a corresponding slider. The second rotating groove 316 is opened on the inner wall of the first interface 301, and two connecting holes 304 are also opened on the bottom surface of the rotating plate 303.

[0042] The piezoelectric sensor body 2 is fixedly provided with an electrical connector 201 , and two connecting rods 202 are fixedly provided on the front end surface of the electrical connector 201 . A threaded interface 203 is also provided on the surface of the electrical connector 201 . A first interface 301 is provided with a threaded groove 305 corresponding to the shape of the threaded interface 203 .

[0043] A rubber sealing block 310 is fixedly arranged on the top of the blocking block 309, and a fixed connection is formed between the bottom surface of the rubber sealing block 310 and the top surface of the extrusion block 312. Connecting through holes 313 are provided on the blocking block 309, the rubber sealing block 310, the inner core rotating block 311 and the connecting bottom plate 308, and a first arc-shaped sliding groove 307 is also provided on the connecting bottom plate 308.

[0044] In this embodiment: when the user is inspecting or replacing the piezoelectric sensor body 2, since the electrical connector 201 in the piezoelectric sensor body 2 and the first interface 301 in the connecting assembly 3 are threadedly connected through the threaded groove 305 in the first interface 301 and the threaded interface 203 in the electrical connector 201, this connection method is not only convenient for the initial installation of the two, but also convenient for disassembly during inspection or replacement.

[0045] At the same time, since the front end of the electrical connector 201 is also fixedly connected with two connecting rods 202, and when the electrical connector 201 is inside the first interface 301, the connecting rods 202 are plugged into the connecting holes 304 opened at the bottom of the rotating plate 303, when the user rotates and disassembles the piezoelectric sensor body 2, the rotating plate 303 will synchronously follow the electrical connector 201 to rotate accordingly under the plugging action between the connecting holes 304 and the connecting rods 202;

[0046] When the rotating plate 303 rotates, since a through slot is provided on the rotating plate 303 for the first connecting rod 306 to slide up and down, it should be noted that the first connecting rod 306 can only slide up and down on the rotating plate 303 and will not separate from the rotating plate 303. This arrangement is to allow the first connecting rod 306 to synchronously follow the blocking block 309 to move up and down while the subsequent blocking block 309 moves up and down to avoid jamming. The other end of the first connecting rod 306 is fixedly arranged on the inner core rotating block 311. Therefore, when the rotating plate 303 rotates, the first connecting rod 306 will drive the inner core rotating block 311 to rotate synchronously.

[0047] participate Fig.10 It can be seen that since the limit strip 333 is fixedly connected to the top of the inner core rotating block 311, and the limit strip 333 is in contact with the limit flap 324, it should be noted that a movable seat 326 is slidably arranged inside the upper end of the blocking block 309, and the movable seat 326 is rotatably connected to the limit flap 324 through a rotating rod and a torsion spring, and the limit flap 324 is arranged inside the arc groove 332 opened in the inner core rotating block 311, and the limit flap 324 can only be turned in the opposite direction of the movement of the limit strip 333. Therefore, when the rotating plate 303 is rotated When rotating, the limit bar 333 will be restricted by the limit flap 324, which makes the inner core rotating block 311 that should rotate with the first connecting rod 306 unable to rotate, and the limit flap 324 is set on the blocking block 309, and the rotation of the rotating plate 303 will not stop because the inner core rotating block 311 cannot rotate. Therefore, under the action of this rotational force, the blocking block 309 rotating inside the first interface 301 will follow the rotating plate 303 to perform a corresponding rotation effect in this case.

[0048] Since the blocking block 309, the rubber sealing block 310, the connecting bottom plate 308 and the inner core rotating block 311 are all provided with connecting through holes 313, and in the initial state, the connecting through holes 313 provided by the four are all at the same position and are interconnected, and the connecting through holes 313 provided by the four are also interconnected with the connecting through holes 313 provided by the second interface 302, and this arrangement is to allow the refrigerant gas in the refrigeration pipe 1 to be injected into the first interface 301 through these interconnected connecting through holes 313, so that the piezoelectric sensor body 2 can complete the monitoring effect of the refrigerant gas;

[0049] Since the connecting bottom plate 308 and the rubber sealing block 310 are respectively fixedly arranged at the bottom end and the top end of the blocking block 309, when the blocking block 309 is rotated, the connecting through holes 313 opened by the three will be misaligned with the connecting through holes 313 opened on the second interface 302, so that the part of the rubber sealing block 310 without the connecting through holes 313 can complete the blocking of the connecting through holes 313 opened on the second interface 302, thereby preventing the refrigerant gas inside the second interface 302 from entering the first interface 301 temporarily. This arrangement is also to prevent the refrigerant gas from leaking due to the disassembly of the piezoelectric sensor body 2 when the user inspects, replaces or disassembles the piezoelectric sensor body 2.

[0050] Since one end of two connecting sliders 330 is also connected to the outer surface of the blocking block 309, the other ends of the two connecting sliders 330 are slidably arranged inside the corresponding first rotating groove 315, and since the first rotating groove 315 is divided into two sections, and each section of the first rotating groove 315 is evenly divided into a first moving station 318, a second moving station 319 and a third moving station 320, the second moving station 319 is opened by moving downward on the basis of the height of the first moving station 318, and the third moving station 320 is opened by moving upward on the basis of the height of the first moving station 318, and the two sections of the first rotating groove 315 are not connected, that is, the third moving station 320 in one section of the first rotating groove 315 is not connected to the first moving station 318 in the other section, and it should be noted that the two connecting sliders 330 are both inside the first moving station 318 in the corresponding first rotating groove 315 in the initial position;

[0051] Therefore, when the blocking block 309 rotates, the connecting slider 330 on the blocking block 309 will move from the first movable station 318 in the corresponding first rotating groove 315 to the inside of the second movable station 319. This arrangement will also cause the blocking block 309 and the rubber sealing block 310 fixedly set on the blocking block 309 to move downward a short distance. This arrangement is intended to reduce the friction between the rubber sealing block 310 and the bottom of the second interface 302 by moving downward when the blocking block 309 rotates, so that the rubber sealing block 310 and the blocking block 309 can better complete the rotation effect.

[0052] Since the opening height of the third moving station 320 is higher than the opening height of the first moving station 318, when the connecting slider 330 on the blocking block 309 rotates from the second moving station 319 in the first rotating groove 315 to the inside of the third moving station 320, the blocking block 309 and the rubber sealing block 310 will move up accordingly, and the upward movement of this distance is higher than the height of the initial positions of the blocking block 309 and the rubber sealing block 310, and since the rubber sealing block 310 is in the initial position, it is in close contact with the first interface 3 01 bottom surface, so when the rubber sealing block 310 follows the blocking block 309 to move upward, the rubber sealing block 310 will be squeezed to a certain extent, so that the contact between the rubber sealing block 310 and the bottom surface of the first interface 301 is closer. Through this arrangement, the portion of the rubber sealing block 310 without the connecting hole 313 can also more effectively complete the blocking of the connecting hole 313 on the first interface 301, thereby better preventing the refrigerant gas inside the second interface 302 from entering the first interface 301.

[0053] Through the above arrangement, not only can the disassembly and assembly of the piezoelectric sensor body 2 be completed effectively and quickly, but also during the disassembly and assembly of the piezoelectric sensor body 2, the rotating plate 303 is driven to rotate, so that the inner core rotating block 311, the blocking block 309 and the rubber sealing block 310 are all rotated accordingly, and this rotation not only allows the connecting through holes 313 opened on the blocking block 309, the rubber sealing block 310 and the connecting bottom plate 308 to be misaligned with the connecting through holes 313 opened on the second interface 302, so that the second interface 3 02 can be temporarily unable to enter the first interface 301, and after the blocking block 309 completes the rotation, the blocking block 309 and the rubber sealing block 310 will further move upward, so that the rubber sealing block 310 can be more closely in contact with the bottom surface of the second interface 302, and then the part of the rubber sealing block 310 without the connecting hole 313 can complete the sealing effect of the connecting hole 313 on the second interface 302, thereby further reducing the occurrence of refrigerant gas entering the first interface 301.

[0054] Embodiment 2: This embodiment is an improvement made on the basis of Embodiment 1. Figure 1-Figure 11 As shown, a second arc-shaped slide groove 321 is provided on the top surface of the inner core rotating block 311 , and an arc-shaped track groove 322 is further provided on the bottom surface of the second arc-shaped slide groove 321 , and an extrusion block 312 is slidably arranged inside the second arc-shaped slide groove 321 .

[0055] The bottom surface of the extrusion block 312 is fixedly connected to one end of the third connecting rod 331 , and the other end of the third connecting rod 331 is slidably disposed inside the arc track groove 322 via a ball bearing.

[0056] In this embodiment: since the opening length of the third moving station 320 in the first rotating groove 315 is limited, when the connecting slider 330 on the blocking block 309 slides into the third moving station 320 in the first rotating groove 315 and moves a short distance, the movement of the connecting slider 330 will stop under the restriction of the third moving station 320;

[0057] Since one end of the second connecting rod 323 is arranged inside the blocking block 309, and the other end of the second connecting rod 323 is slidably arranged inside the third rotating groove 317, and the first interface 301 is also provided with a connecting groove 334 for the second connecting rod 323 to slide, before the blocking block 309 stops, the second connecting rod 323 will also synchronously follow the blocking block 309 to slide inside the third rotating groove 317, and when the blocking block 309 stops moving, the second connecting rod 323 will also stop moving;

[0058] See also Figure 4-Figure 6 It can be known that the depth of the third rotating groove 317 opened in the third movable station 320 in the first rotating groove 315 is greater than the depth of the third rotating groove 317 opened in the first movable station 318 and the second movable station 319 in the first rotating groove 315, that is to say, the distance between the third rotating groove 317 opened in the third movable station 320 and the center of the first interface 301 is greater than the distance between the third rotating groove 317 opened in the first movable station 318 and the second movable station 319 and the center of the first interface 301. Therefore, when the connecting slider 330 on the blocking block 309 slides into the third movable station 320, the second connecting rod 323 will also slide into the deeper third rotating groove 317 in advance.

[0059] It should be noted that before the second connecting rod 323 slides into the deeper third rotating groove 317, the second connecting rod 323 is arranged between one end of the blocking block 309 to form contact with the extrusion moving block 329, and squeezes the extrusion moving block 329, so that the moving seat 326 fixedly connected to the extrusion moving block 329 is compressed at the bottom of the moving slide groove 327. This arrangement is to allow the limit flap 324 arranged on the moving seat 326 to be located inside the arc groove 332 opened in the blocking block 309, so that the limit flap 324 can limit the movement of the limit bar 333.

[0060] When the second connecting rod 323 moves, Fig.10 It can be seen that at this time, the extrusion limit of the extrusion moving block 329 by the second connecting rod 323 will be released, and the moving seat 326 will squeeze the connecting spring 328 when compressed. Therefore, under the action of the reset elastic force of the connecting spring 328, the moving seat 326 and the extrusion moving block 329 will quickly reset to the top end of the moving slide groove 327, and this arrangement also allows the limit flap 324 set on the moving seat 326 to move synchronously with the moving seat 326, so that the limit flap 324 releases the limit on the limit strip 333. It should be noted that when the limit flap 324 releases the limit on the limit strip 333, the blocking block 309 is also restricted by the third moving station 320 in the first rotating groove 315, thereby stopping moving.

[0061] When the blocking block 309 stops moving and the limiting flap 324 releases the limiting effect on the limiting strip 333 , the inner core rotating block 311 will rotate a certain distance inside the blocking block 309 as the rotating plate 303 continues to rotate.

[0062] Since a second arc-shaped slide groove 321 is provided on the top of the inner core rotating block 311, an extrusion block 312 is provided inside the second arc-shaped slide groove 321, and the bottom surface of the extrusion block 312 is slidably provided inside the arc track groove 322 through the third connecting rod 331, it should be noted that a through groove is provided on the blocking block 309 for the extrusion block 312 to move up and down, and the through groove restricts the extrusion block 312, so that the extrusion block 312 can only move up and down inside the through groove provided in the blocking block 309. The through groove of the blocking block 309 also prevents the extrusion block 312 from following the movement of the inner core rotating block 311 when the inner core rotating block 311 moves laterally. The above arrangement is to prevent the extrusion block 312 from deviating to the left and right directions when the blocking block 309 or the inner core rotating block 311 moves, thereby affecting the subsequent extrusion of the rubber sealing block 310 by the extrusion block 312. At the same time, the upper end surface of the extrusion block 312 contacts the bottom surface of the rubber sealing block 310. Figure 8It can be seen that the depth of the arc trajectory groove 322 is gradually reduced. Therefore, when the inner core rotating block 311 continues to rotate, the extrusion block 312 will be gradually lifted by the arc trajectory groove 322 under the rotation of the inner core rotating block 311. At the same time, the rubber sealing block 310 contacted by the extrusion block 312 is just below the connecting hole 313 opened in the second interface 302 due to the rotation between the blocking blocks 309. Therefore, by lifting the extrusion block 312, the rubber sealing block 310 will also be squeezed, so that the rubber sealing block 310 will be raised to a certain extent, so that this part of the rubber sealing block 310 can better complete the sealing of the connecting hole 313 opened in the second interface 302, thereby further reducing the occurrence of refrigerant gas entering the first interface 301.

[0063] It should be noted that when the first connecting rod 306 rotates to the end of the first arc-shaped sliding groove 307, not only the electrical connector 201 and the first interface 301 complete the corresponding separation, but also the third connecting rod 331 connected to the extrusion block 312 also slides to the shallowest position of the arc-shaped track groove 322.

[0064] After the user has completed the inspection or replacement of the piezoelectric sensor body 2, the user only needs to connect the threaded interface 203 opened by the electrical connector 201 and the threaded groove 305 opened by the first interface 301 to complete the connection between the two. Before the electrical connector 201 rotates, the rotating plate 303 will be plugged into the connecting rod 202 on the electrical connector 201 again, so that when the electrical connector 201 is installed and rotated, the rotating plate 303 will rotate in the opposite direction to the rotation when it is disassembled.

[0065] When the rotating plate 303 rotates in the opposite direction, the inner core rotating block 311 will be reset accordingly under the rotation of the rotating plate 303. When the inner core rotating block 311 is reset, the extrusion block 312 will also be gradually retracted into the second arc-shaped slide groove 321 under the reverse rotation of the inner core rotating block 311, thereby releasing the extrusion effect on the rubber sealing block 310.

[0066] Before the inner core rotating block 311 is reset, the limit bar 333 provided on the inner core rotating block 311 will contact the limit flap 324 again. Since the limit flap 324 is rotatably arranged on the moving seat 326 by the torsion spring and the rotating rod, and the flipping direction of the limit flap 324 is the same as the reset direction of the inner core rotating block 311, the limit bar 333 will only make the limit flap 324 flip, and the limit flap 324 will not prevent the limit bar 333 from resetting.

[0067] See also Figure 7 and Fig. 9It can be seen that the inner core rotating block 311 is rotatably arranged inside the blocking block 309 through the rotating rod arranged on the top, and a torsion spring is also arranged between the rotating rod arranged on the inner core rotating block 311 and the blocking block 309. Therefore, when the upper limit bar 333 of the inner core rotating block 311 passes over the limit flap 324, the continued rotation of the inner core rotating block 311 will drive the blocking block 309 to rotate back to the original position through the torsional force of the torsion spring, and the rotation of the blocking block 309 will also drive the connecting bottom plate 308 and the rubber sealing block 310 to rotate back to the original position, so that the connecting through hole 313 opened on the connecting bottom plate 308, the blocking block 309, the rubber sealing block 310 and the inner core rotating block 311 can overlap with the connecting through hole 313 opened on the second interface 302 again, so that the refrigerant gas temporarily stored in the second interface 302 can be connected with the first interface 301 again, so that the piezoelectric sensor body 2 that has been installed can complete the monitoring of the refrigerant gas again.

[0068] Through the above arrangement, after the blocking block 309 stops moving, the inner core rotating block 311 is rotated so that the extrusion block 312 can squeeze the rubber sealing block 310 accordingly, so that the rubber sealing block 310 can seal the connecting hole 313 of the second interface 302 more tightly. When the piezoelectric sensor body 2 is installed again later, the rotating plate 303 can also be rotated in the opposite direction, so that the inner core rotating block 311 and the blocking block 309 can be reset accordingly, thereby releasing the blockage of the connecting hole 313 of the second interface 302, and allowing the refrigerant gas inside the second interface 302 to circulate inside the first interface 301 again, so that the installed piezoelectric sensor body 2 can monitor the refrigerant gas again.

[0069] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0070] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A piezoelectric sensor device for monitoring refrigerant leakage in a refrigeration system, comprising a refrigeration pipe (1) and a piezoelectric sensor body (2), characterized in that: The refrigeration pipe (1) is fixedly sleeved inside the second interface (302) in the connecting assembly (3), and the refrigeration pipe (1) is connected to the second interface (302), and the second interface (302) is fixedly connected to the first interface (301) at one end of the second interface (302) away from the refrigeration pipe (1), and a blocking block (309) is provided inside the first interface (301), and the outer surface of the blocking block (309) is fixedly connected to one end of two connecting sliders (330), and the other ends of the two connecting sliders (330) are slidably provided inside the first rotating groove (315), and the first rotating groove (315) is opened on the inner wall of the first interface (301); The first rotating groove (315) is composed of a first moving station (318), a second moving station (319) and a third moving station (320), and a third rotating groove (317) is further provided on the inner wall of one side of the first rotating groove (315), and a connecting groove (334) is provided on the first interface (301), and an accommodating cavity (314) is further provided inside the blocking block (309), and an inner core rotating block (311) is slidably provided inside the accommodating cavity (314).

2. The piezoelectric sensor device for monitoring refrigerant leakage in a refrigeration system according to claim 1, characterized in that: A second arc-shaped slide groove (321) is provided on the top surface of the inner core rotating block (311), and an arc-shaped track groove (322) is further provided on the bottom surface of the second arc-shaped slide groove (321). An extrusion block (312) is slidably provided inside the second arc-shaped slide groove (321).

3. The piezoelectric sensor device for monitoring refrigerant leakage in a refrigeration system according to claim 2, characterized in that: The bottom surface of the extrusion block (312) is fixedly connected to one end of the third connecting rod (331), while the other end of the third connecting rod (331) is slidably arranged inside the arc-shaped track groove (322) via a ball bearing.

4. The piezoelectric sensor device for monitoring refrigerant leakage in a refrigeration system according to claim 1, characterized in that: The inner core rotating block (311), the blocking block (309) and the connecting base plate (308) are all provided with a first arc-shaped sliding groove (307), and the connecting base plate (308) is fixedly arranged on the bottom surface of the blocking block (309). One end of the first connecting rod (306) is slidably arranged inside the first arc-shaped sliding groove (307) provided on the inner core rotating block (311), the blocking block (309) and the connecting base plate (308), and a fixed connection is formed between one end of the first connecting rod (306) and the inner core rotating block (311). The blocking block (309) is also provided with an arc-shaped groove (332), and a limiting flap (324) is also provided inside the arc-shaped groove (332), and one end of a limiting strip (333) is also slidably arranged inside the arc-shaped groove (332), and the other end of the limiting strip (333) is fixedly arranged on the inner core rotating block (311).

5. The piezoelectric sensor device for monitoring refrigerant leakage in a refrigeration system according to claim 4, characterized in that: The position-limiting flap (324) is rotatably arranged on the movable seat (326) via a rotating rod, and a torsion spring is further arranged between the movable seat (326) and the position-limiting flap (324), and the torsion spring is sleeved on the rotating rod.

6. The piezoelectric sensor device for monitoring refrigerant leakage in a refrigeration system according to claim 5, characterized in that: The movable seat (326) is arranged inside the arc groove (332), and the movable seat (326) is slidably arranged inside the corresponding movable slide groove (327) through a slider. The movable slide groove (327) is opened on the inner wall of the arc groove (332), and a connecting spring (328) is also provided between the movable slide groove (327) and the slider.

7. The piezoelectric sensor device for monitoring refrigerant leakage in a refrigeration system according to claim 6, characterized in that: A fixed connection is formed between the top surface of the movable seat (326) and the extrusion movable block (329), and the extrusion movable block (329) is also in contact with one end of the second connecting rod (323), and the other end of the second connecting rod (323) is set inside the third rotation groove (317) through a ball sliding.

8. The piezoelectric sensor device for monitoring refrigerant leakage in a refrigeration system according to claim 4, characterized in that: The other end of the first connecting rod (306) is slidably arranged on the top surface of the rotating plate (303), and the rotating plate (303) is slidably arranged inside the second rotating groove (316) through a corresponding slider. The second rotating groove (316) is opened on the inner wall of the first interface (301), and the bottom surface of the rotating plate (303) is also opened with two connecting sockets (304).

9. The piezoelectric sensor device for monitoring refrigerant leakage in a refrigeration system according to claim 1, characterized in that: The piezoelectric sensor body (2) is fixedly provided with an electrical connector (201), two connecting rods (202) are fixedly provided on the front end surface of the electrical connector (201), a threaded interface (203) is also provided on the surface of the electrical connector (201), and the first interface (301) is provided with a threaded groove (305) corresponding to the shape of the threaded interface (203).

10. The piezoelectric sensor device for monitoring refrigerant leakage in a refrigeration system according to claim 1, characterized in that: A rubber sealing block (310) is fixedly provided on the top of the blocking block (309), and a fixed connection is formed between the bottom surface of the rubber sealing block (310) and the top surface of the extrusion block (312). The blocking block (309), the rubber sealing block (310), the inner core rotating block (311) and the connecting bottom plate (308) are all provided with connecting through holes (313), and the connecting bottom plate (308) is also provided with a first arc-shaped sliding groove (307).

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