A digital remote transmission SF6 gas density meter

Abstract

The invention discloses a digital remote transmission SF6 gas density meter, which relates to the field of gas monitoring technology, and includes a housing, an anti-leakage component, and a gas detection mechanism. The anti-leakage component includes an outer cylinder, an annular ring is installed at the bending surface of the bottom of the outer cylinder, a through hole is opened at the edge of the outer side of the annular ring, a supporting elastic ring is installed at the circumferential surface of the inner side of the annular ring, and a strip hole is opened in the middle of the inner side of the supporting elastic ring. The gas detection mechanism includes a pressure sensor and an inner cylinder, the pressure sensor is installed in the middle of the top of the inner cavity of the housing, the inner cylinder is fixedly installed in the middle of the outer cylinder, a piston is slidably installed in the middle of the inner cylinder, an elastic strip is fixedly installed between the top of the piston and the pressure end of the pressure sensor, and a supporting component is installed on the outer circumferential surface of the inner cylinder and near the supporting elastic ring. The digital remote transmission SF6 gas density meter achieves the effect of anti-leakage, can be sealed, is not easy to leak, is overall stable, and monitors safely and accurately.

Description

Technical Field

[0001] The invention relates to the technical field of gas monitoring, in particular to a digital remote transmission type SF6 gas density meter. Background Art

[0002] SF6 is sulfur hexafluoride gas, which has the characteristics of high insulation strength and good arc extinguishing performance. It is the preferred insulating medium for high-voltage equipment at present and has been widely used in SF6 high-voltage circuit breakers, GIS, SF6 mutual inductors, SF6 transformers and other equipment. The density state of SF6 gas is one of the key parameters to measure whether the insulation degree of SF6 gas meets the insulation requirements of the corresponding voltage level. Therefore, SF6 gas is widely used in high-voltage electrical appliances such as high-voltage circuit breakers, lightning arresters, mutual inductors, transformers and pipeline busbars as an insulating and arc extinguishing medium. Electrical components work in a closed container filled with SF6 gas. The density value of SF6 gas has a direct impact on the electrical performance of electrical components, especially the insulation and arc extinguishing capabilities. The monitoring of SF6 gas density is to indirectly reflect the density of SF6 gas by measuring the pressure of SF6 gas and based on the corresponding relationship between pressure and density within a certain temperature range.

[0003] At present, the existing SF6 gas density meter is easily affected by external force and vibration during use, which may cause displacement of the connection and thus gas leakage. This makes the gas pressure unstable and accurate information cannot be obtained due to abnormal supply pressure, making the detected information questionable. The pointer position of the SF6 gas density meter is prone to errors, which may mislead SF6 gas monitoring. Summary of the invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a digital remote transmission SF6 gas density meter, comprising:

[0005] A shell, a pointer is installed in the middle of the outer end surface of the shell, a driver is installed in the inner cavity of the shell and near the pointer, the output end of the driver is fixedly installed between the pointer, a transmitter is installed on the side of the outer circular surface of the shell, and a single-chip microcomputer is installed on the side of the bottom of the inner cavity of the shell. Through the control of the single-chip microcomputer, the sulfur hexafluoride gas density value is timely transmitted digitally to the outside through the transmitter, so that remote control can be performed, and the overall device is more convenient and flexible to use;

[0006] An anti-leakage component, which is used to seal the SF6 gas and is installed in the middle of the bottom of the outer cylindrical surface of the housing;

[0007] Wherein, the anti-leakage component comprises an outer cylinder, the top of the outer cylinder is fixedly installed at the middle of the bottom of the outer cylindrical surface of the shell, an annular ring is installed at the bent surface of the bottom of the outer cylinder, a through hole is opened at the edge of the outer side of the annular ring, a supporting elastic ring is installed at the circumferential surface of the inner side of the annular ring, and a strip hole is opened at the middle of the inner side of the supporting elastic ring. With the support of the outer cylinder and by passing bolts through the edge and the through hole of the bottom of the outer cylinder, the annular ring can be limited, so that the annular ring is not easy to deviate, and under the connection of the bolts, the edge of the bottom of the outer cylinder squeezes the edge of the annular ring, so that sealing can be performed, and sulfur fluoride gas is not easy to leak, so that the pressure of sulfur fluoride gas is in a constant state, which is convenient for detecting the gas pressure;

[0008] A gas detection mechanism, which is used to monitor gas density and is installed in the middle of the housing;

[0009] Wherein, the gas detection mechanism comprises a pressure sensor and an inner cylinder, the pressure sensor is installed in the middle of the top of the inner cavity of the shell, the inner cylinder is fixedly installed in the middle of the outer cylinder, a piston is slidably installed in the middle of the inner cylinder, an elastic strip is fixedly installed between the top of the piston and the pressure-bearing end of the pressure sensor, a supporting component is installed on the outer cylindrical surface of the inner cylinder and close to the supporting elastic ring, the gas pressure of sulfur hexafluoride is applied to the lower end surface of the piston, the piston will be subjected to the upward urging force of the gas pressure, and the piston can be pushed upward, so that the supporting elastic ring is pressed, and the supporting elastic ring applies a pressing force to the pressure-bearing end of the pressure sensor, so that the pressure value can be detected, and the pressure sensor is used to convert the electric signal into an electric signal and transmit it to the single-chip microcomputer, and the density of sulfur hexafluoride gas is monitored under the calculation conversion of the single-chip microcomputer;

[0010] The driver is controlled by the calculated value of the single chip computer, so that the pointer can rotate accurately without being driven by a gear set, thereby making the pointer point more accurately.

[0011] Preferably, the through holes are evenly distributed at the edge of the outer side of the annular ring, the material of the annular ring is rubber, and the strip holes are evenly distributed in the middle of the inner side of the supporting elastic ring. When the bending part of the inner cavity of the outer cylinder presses the supporting elastic ring, the supporting elastic ring will be elastically deformed by the pressure, and the supporting elastic ring will elastically support the inner cavity of the annular ring by utilizing the action force and reaction force, so that the annular ring can fully fit with the bending part of the inner cavity of the outer cylinder, further promoting the sealing of the gas.

[0012] Preferably, the inner cylinder passes through the middle of the outer cylinder, and the bottom end of the inner cylinder extends to the outside of the outer cylinder, and the elastic strip is arc-shaped.

[0013] Preferably, the piston is sealed and fitted with the inner tube, and the axis at the middle of the piston coincides with the axis at the middle of the inner tube.

[0014] Preferably, the supporting assembly comprises a U-shaped rod, which is slidably installed on the outer cylindrical surface of the inner cylinder and close to the supporting elastic ring through a sliding sleeve, the U-shaped rod and the inner cylinder are sealed and adapted, a conical spring is fixedly installed between the spherical end of the U-shaped rod and the outer cylindrical surface of the inner cylinder, a crescent block is fixedly installed at the bending part of the outer side of the U-shaped rod and close to the piston through a right-angle connecting rod, the crescent block is installed inside the inner cylinder, and a ball is rollingly installed on the arc-shaped concave surface of the outer side of the crescent block, and the deformation of the supporting elastic ring is utilized to apply a driving force to the spherical end of the U-shaped rod, so that the U-shaped rod moves toward the inner direction close to the inner cylinder, and the conical spring is compressed, and under the connection of the right-angle connecting rod, the crescent block moves toward the position close to the piston, so that the piston can be supported by two symmetrical crescent blocks, which is not easy to be skewed, and the structures are connected together by utilizing the interaction between the structures.

[0015] Preferably, there are two crescent blocks, and the two crescent blocks are symmetrically installed along the piston. The balls are evenly distributed on the arc-shaped concave surface outside the crescent blocks. The balls fit with the outer cylindrical surface of the piston. When the piston moves upward under the gas pressure, the rolling friction of the balls can be utilized to make the overall movement of the piston smooth.

[0016] Preferably, a wiring assembly is installed on the outer circular surface of the shell and away from the transmitter, and the wiring assembly includes a rectangular shell, the rectangular shell is installed on the outer circular surface of the shell and at one end away from the transmitter, a base is installed in the middle of the inside of the rectangular shell, support blocks are fixedly installed on the top and bottom of the inner cavity of the rectangular shell, a round rod is fixedly installed on one end of the support block close to the base, corresponding two sides of the inner cavity of the rectangular shell are provided with snap-in grooves, and a terminal module is installed on the end of the rectangular shell away from the shell.

[0017] Preferably, the support block is made of rubber, the clamping groove is circular, there are two clamping grooves, and the two clamping grooves are symmetrically installed along the base.

[0018] Preferably, the terminal module includes a connecting seat, which is installed at one end of the rectangular shell away from the outer shell, and a plug-in terminal is installed in the middle of the outer plane of the connecting seat, and a positioning rod is fixedly installed on the outer side of the connecting seat and close to the plug-in terminal, and an arc groove is opened in the middle of the outer circular surface of the positioning rod, and an elastic ball head clamping piece is fixedly installed on the side of the outer side of the connecting seat, and the position of the elastic ball head clamping piece corresponds to the position of the clamping groove, and the positioning rod is inserted into the interior of the rectangular shell through the guiding effect of the positioning rod, and the positioning rod and the base cooperate with each other, and the position of the elastic ball head clamping piece corresponds to the position of the clamping groove, so that the plug-in terminal is inserted into the socket of the base, and under the elastic support of the elastic ball head clamping piece, the ball head end of the elastic ball head clamping piece is clamped in the position of the clamping groove, so that the connecting seat can be installed, thereby facilitating the overall installation and disassembly.

[0019] Preferably, there are four positioning rods, and the four positioning rods are evenly distributed on the plane outside the connecting seat, there are two elastic ball head clamps, and the two elastic ball head clamps are symmetrically installed along the plug-in terminal, and the support block is made of rubber material. Under the elastic support of the support block, the outer cylindrical surface of the round rod is embedded in the position of the arc groove, so that self-locking can be achieved by utilizing the interaction between the structures, and it is not easy to loosen.

[0020] The present invention provides a digital remote transmission SF6 gas density meter. It has the following beneficial effects:

[0021] 1. The digital remote transmission SF6 gas density meter uses the gas pressure of sulfur hexafluoride to apply to the lower end surface of the piston. The piston will be pushed upward by the gas pressure, so that the supporting elastic ring is pressed, and the supporting elastic ring applies pressing force to the pressure-receiving end of the pressure sensor, so that the pressure value can be detected and converted into an electrical signal by the pressure sensor and transmitted to the single-chip microcomputer. Under the calculation and conversion of the single-chip microcomputer, the density of sulfur hexafluoride gas is monitored.

[0022] 2. The digital remote transmission SF6 gas density meter can transmit the sulfur hexafluoride gas density value to the outside in a timely manner through the transmitter through the control of the single-chip microcomputer, so it can be remotely controlled, and the overall equipment is more convenient and flexible to use.

[0023] 3. The digital remote transmission SF6 gas density meter uses bolts to pass through the edge of the bottom of the outer cylinder and the through hole to limit the annular ring, so that the annular ring is not easy to deviate. Under the connection of the bolts, the edge of the bottom of the outer cylinder squeezes the edge of the annular ring to seal it, which makes it difficult for sulfur fluoride gas to leak, keeps the sulfur fluoride gas pressure in a constant state, and facilitates the detection of gas pressure.

[0024] 4. For the digital remote transmission SF6 gas density meter, when the bending part of the inner cavity of the outer cylinder presses the supporting elastic ring, the supporting elastic ring will be elastically deformed by the pressure, and the supporting elastic ring will elastically support the inner cavity of the annular ring by utilizing the action force and reaction force, so that the annular ring can fully fit with the bending part of the inner cavity of the outer cylinder, so that the contact is good.

[0025] 5. The digital remote transmission SF6 gas density meter uses the deformation of the supporting elastic ring to apply a driving force to the spherical end of the U-shaped rod, so that the U-shaped rod moves toward the inner direction of the inner tube, and the conical spring is compressed. Under the connection of the right-angle connecting rod, the crescent block moves toward the position close to the piston. The piston can be supported by two symmetrical crescent blocks, which is not easy to be skewed. The interaction between the structures is used to connect the structures together.

[0026] 6. The digital remote transmission SF6 gas density meter has a ball that fits the outer cylindrical surface of the piston. As the piston moves upward under the gas pressure, the rolling friction of the ball can be used to make the overall movement of the piston smooth.

[0027] 7. The digital remote transmission SF6 gas density meter, through the guiding effect of the positioning rod, allows the positioning rod to be inserted into the interior of the rectangular shell, and utilizes the mutual cooperation between the positioning rod and the base, and utilizes the position of the elastic ball head clamping piece to correspond to the position of the clamping groove, so that the plug-in terminal is conveniently inserted into the socket of the base, and under the elastic support of the elastic ball head clamping piece, the ball head end of the elastic ball head clamping piece is clamped in the position of the clamping groove, so that the connecting seat can be installed, thereby facilitating the overall installation and disassembly.

[0028] 8. For the digital remote transmission SF6 gas density meter, when the positioning rod is inserted into the interior of the rectangular shell, the support block is made of rubber. Under the elastic support of the support block, the outer cylindrical surface of the round rod is embedded in the position of the arc groove, and the interaction between the structures can be used to achieve self-locking, which is not easy to loosen. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the overall structure of the digital remote transmission SF6 gas density meter of the present invention;

[0030] Figure 2 This is a schematic diagram of the structure of the digital remote transmission SF6 gas density meter of the present invention when viewed from above;

[0031] Figure 3 It is a schematic diagram of the connection structure between the anti-leakage component and the housing of the present invention;

[0032] Figure 4 It is a schematic cross-sectional structural diagram of the anti-leakage component of the present invention;

[0033] Figure 5It is a schematic diagram of the connection structure between the gas detection mechanism and the housing of the present invention;

[0034] Figure 6 It is a schematic diagram of the connection structure between the supporting component and the housing of the present invention;

[0035] Figure 7 This is a schematic diagram of the overall structure of the supporting assembly of the present invention;

[0036] Figure 8 This is a schematic diagram of the split structure of the wiring assembly of the present invention;

[0037] Fig. 9 It is a schematic diagram of the terminal module structure of the present invention.

[0038] In the figure: 1. shell; 2. pointer; 3. driver; 4. transmitter; 5. single chip microcomputer; 6. anti-leakage component; 7. gas detection mechanism; 8. wiring component; 61. outer cylinder; 62. annular ring; 63. through hole; 64. supporting elastic ring; 65. strip hole; 71. pressure sensor; 72. inner cylinder; 73. piston; 74. elastic strip; 75. supporting component; 751. U-shaped rod; 752. conical spring; 753. crescent block; 754. ball; 81. rectangular shell; 82. base; 83. support block; 84. round rod; 85. snap-in groove; 86. terminal module; 861. connecting seat; 862. plug-in terminal; 863. positioning rod; 864. arc groove; 865. elastic ball head clamp. DETAILED DESCRIPTION

[0039] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0040] The first embodiment, as Figure 1-Figure 4 As shown, the present invention provides a technical solution: a digital remote transmission SF6 gas density meter, comprising:

[0041] A shell 1 is provided, wherein a pointer 2 is installed in the middle of the outer end surface of the shell 1, a driver 3 is installed in the inner cavity of the shell 1 and near the pointer 2, and the output end of the driver 3 is fixedly installed between the pointer 2, a transmitter 4 is installed on the side of the outer cylindrical surface of the shell 1, and a single-chip computer 5 is installed on the side of the bottom of the inner cavity of the shell 1. Through the control of the single-chip computer 5, the density value of sulfur hexafluoride gas is timely transmitted digitally to the outside through the transmitter 4, so that remote control can be performed, and the overall device is more convenient and flexible to use;

[0042] An anti-leakage component 6, which is used to seal the SF6 gas, and is installed in the middle of the bottom of the outer cylindrical surface of the housing 1;

[0043] The anti-leakage component 6 includes an outer cylinder 61, the top of the outer cylinder 61 is fixedly installed at the middle of the bottom of the outer cylindrical surface of the shell 1, an annular ring 62 is installed at the bent surface of the bottom of the outer cylinder 61, a through hole 63 is opened at the edge of the outer side of the annular ring 62, a supporting elastic ring 64 is installed at the circumferential surface of the inner side of the annular ring 62, and a strip hole 65 is opened at the middle of the inner side of the supporting elastic ring 64. With the support of the outer cylinder 61, and by passing bolts through the edge of the bottom of the outer cylinder 61 and the through hole 63, the annular ring 62 can be limited, so that the annular ring 62 is not easy to deviate, and under the connection of the bolts, the edge of the bottom of the outer cylinder 61 squeezes the edge of the annular ring 62, so that sealing can be performed, and sulfur fluoride gas is not easy to leak;

[0044] The through holes 63 are evenly distributed at the edge of the outer side of the annular ring 62. The material of the annular ring 62 is rubber. The strip holes 65 are evenly distributed in the middle of the inner side of the supporting elastic ring 64. When the bending part of the inner cavity of the outer tube 61 presses the supporting elastic ring 64, the supporting elastic ring 64 will be elastically deformed by the pressure, and use the action force and reaction force to make the supporting elastic ring 64 elastically support the inner cavity of the annular ring 62, so that the annular ring 62 can fully fit with the bending part of the inner cavity of the outer tube 61.

[0045] The second embodiment, as Figure 1-Figure 7 As shown, based on the first embodiment:

[0046] A gas detection mechanism 7, which is used to monitor gas density and is installed in the middle of the housing 1;

[0047] The gas detection mechanism 7 includes a pressure sensor 71 and an inner cylinder 72. The pressure sensor 71 is installed in the middle of the top of the inner cavity of the shell 1. The inner cylinder 72 is fixedly installed in the middle of the outer cylinder 61. A piston 73 is slidably installed in the middle of the inner cylinder 72. An elastic strip 74 is fixedly installed between the top of the piston 73 and the pressure-bearing end of the pressure sensor 71. A supporting component 75 is installed on the outer cylindrical surface of the inner cylinder 72 and close to the supporting elastic ring 64. The bottom end of the inner cylinder 72 is located inside the equipment to be monitored. The gas pressure of sulfur hexafluoride is applied to the lower end surface of the piston 73. The piston 73 is subjected to the upward urging force of the gas pressure, and the piston 73 can be pushed upward, so that the supporting elastic ring 64 is pressed, and the supporting elastic ring 64 applies a pressing force to the pressure-bearing end of the pressure sensor 71, so that the pressure value can be detected, and the pressure sensor 71 is used to convert the electric signal into an electric signal and transmit it to the single-chip microcomputer 5. Under the calculation conversion of the single-chip microcomputer 5, the density of sulfur hexafluoride gas is monitored.

[0048] The driver 3 is controlled by the calculated value of the single chip computer 5, so that the pointer 2 rotates accurately without being driven by a gear set, thereby making the pointer 2 point more accurately.

[0049] The inner cylinder 72 passes through the middle of the outer cylinder 61 , and the bottom end of the inner cylinder 72 extends to the outside of the outer cylinder 61 . The elastic strip 74 is arc-shaped.

[0050] The piston 73 is sealed and fitted with the inner tube 72 , and the axis at the middle of the piston 73 coincides with the axis at the middle of the inner tube 72 .

[0051] The supporting assembly 75 includes a U-shaped rod 751, which is slidably installed on the outer cylindrical surface of the inner cylinder 72 and close to the supporting elastic ring 64 through a sliding sleeve. The U-shaped rod 751 and the inner cylinder 72 are sealed and adapted. A conical spring 752 is fixedly installed between the spherical end of the U-shaped rod 751 and the outer cylindrical surface of the inner cylinder 72. A crescent block 753 is fixedly installed at the bending part of the outer side of the U-shaped rod 751 and close to the piston 73 through a right-angle connecting rod. The crescent block 753 is installed inside the inner cylinder 72. The outer side of the crescent block 753 is fixedly installed at the bending part of the outer side of the U-shaped rod 751 and close to the piston 73. A ball 754 is rollingly installed on the arc-shaped concave surface of the side. When the supporting elastic ring 64 is pressed by the bottom of the outer cylinder 61 to be elastically deformed, the deformation of the supporting elastic ring 64 is used to apply a pushing force to the spherical end of the U-shaped rod 751, so that the U-shaped rod 751 moves toward the inner direction close to the inner cylinder 72, and the conical spring 752 is compressed. Under the connection of the right-angle connecting rod, the crescent block 753 moves to a position close to the piston 73, so that the piston 73 can be supported by two symmetrical crescent blocks 753.

[0052] There are two crescent blocks 753, and the two crescent blocks 753 are symmetrically installed along the piston 73. The balls 754 are evenly distributed on the arc-shaped concave surface outside the crescent block 753. The balls 754 fit with the outer cylindrical surface of the piston 73. As the piston 73 moves upward under the gas pressure, the rolling friction of the balls 754 can be utilized to make the piston 73 move smoothly as a whole.

[0053] The third embodiment, as Figure 1-Figure 4 and Figure 8-Figure 9 As shown, based on the first embodiment:

[0054] A wiring assembly 8 is installed on the outer cylindrical surface of the shell 1 and away from the transmitter 4. The wiring assembly 8 includes a rectangular shell 81. The rectangular shell 81 is installed on the outer cylindrical surface of the shell 1 and away from one end of the transmitter 4. A base 82 is installed in the middle of the rectangular shell 81. Support blocks 83 are fixedly installed on the top and bottom of the inner cavity of the rectangular shell 81. A round rod 84 is fixedly installed on one end of the support block 83 close to the base 82. Snap-in grooves 85 are provided on the corresponding two sides of the inner cavity of the rectangular shell 81. A terminal module 86 is installed on the end of the rectangular shell 81 away from the shell 1.

[0055] The support block 83 is made of rubber. The clamping groove 85 is circular. There are two clamping grooves 85 , and the two clamping grooves 85 are symmetrically installed along the base 82 .

[0056] The terminal module 86 includes a connection seat 861, which is installed at one end of the rectangular shell 81 away from the outer shell 1. A plug-in terminal 862 is installed in the middle of the outer plane of the connection seat 861. A positioning rod 863 is fixedly installed on the outer side of the connection seat 861 and close to the plug-in terminal 862. An arc groove 864 is opened in the middle of the outer circumferential surface of the positioning rod 863. An elastic ball head clamping piece 865 is fixedly installed on the side of the outer side of the connection seat 861. The position of the elastic ball head clamping piece 865 corresponds to the position of the clamping groove 85. The guiding function of the positioning rod 863 allows the positioning rod 863 to be inserted into the interior of the rectangular shell 81, and the positioning rod 863 and the base 82 cooperate with each other, and the position of the elastic ball head clamping piece 865 corresponds to the position of the clamping groove 85, so that the plug-in terminal 862 is inserted into the socket of the base 82. Under the elastic support of the elastic ball head clamping piece 865, the ball head end of the elastic ball head clamping piece 865 is clamped in the position of the clamping groove 85, and the connecting seat 861 can be installed, thereby facilitating the overall installation and disassembly.

[0057] There are four positioning rods 863, and the four positioning rods 863 are evenly distributed on the plane outside the connecting seat 861. There are two elastic ball head clamps 865, and the two elastic ball head clamps 865 are symmetrically installed along the plug-in terminal 862. When the positioning rods 863 are inserted into the interior of the rectangular shell 81, the support block 83 is made of rubber material. Under the elastic support of the support block 83, the outer cylindrical surface of the round rod 84 is embedded in the position of the arc groove 864, and self-locking can be achieved by utilizing the interaction between the structures.

[0058] When in use, first align the connection seat 861 with the rectangular shell 81, and insert the positioning rod 863 into the interior of the rectangular shell 81 through the guiding effect of the positioning rod 863, and use the mutual cooperation between the positioning rod 863 and the base 82, and use the position of the elastic ball head clamping piece 865 to correspond to the position of the clamping groove 85, so that the plug-in terminal 862 is inserted into the jack of the base 82, and under the elastic force support of the elastic ball head clamping piece 865, the ball head end of the elastic ball head clamping piece 865 is clamped in the position of the clamping groove 85, and the connection seat 861 can be installed;

[0059] When the positioning rod 863 is inserted into the interior of the rectangular shell 81, the support block 83 is made of rubber material. Under the elastic support of the support block 83, the outer circumferential surface of the round rod 84 is embedded in the position of the arc groove 864, and self-locking can be achieved by snap connection;

[0060] By using the support of the outer cylinder 61 and passing bolts through the edge of the bottom of the outer cylinder 61 and the through hole 63, the annular ring 62 can be limited, so that the annular ring 62 is not easily offset. Under the connection of the bolts, the edge of the bottom of the outer cylinder 61 squeezes the edge of the annular ring 62, so that sealing can be performed, and sulfur fluoride gas is not easily leaked.

[0061] At the same time, when the bending part of the inner cavity of the outer tube 61 presses the supporting elastic ring 64, the supporting elastic ring 64 will be elastically deformed by the pressure, and the supporting elastic ring 64 elastically supports the inner cavity of the annular ring 62 by using the action force and the reaction force, so that the annular ring 62 can be fully fitted with the bending part of the inner cavity of the outer tube 61;

[0062] At this time, the bottom end of the inner cylinder 72 is located inside the equipment to be monitored, and the gas pressure of sulfur hexafluoride is applied to the lower end surface of the piston 73. The piston 73 is pushed upward by the gas pressure, so that the piston 73 can be pushed upward, so that the supporting elastic ring 64 is pressed, and the supporting elastic ring 64 applies a pressing force to the pressure-receiving end of the pressure sensor 71, so that the pressure value can be detected, and the pressure sensor 71 is used to convert it into an electrical signal and transmit it to the single-chip microcomputer 5, and the density of sulfur hexafluoride gas is monitored under the calculation conversion of the single-chip microcomputer 5;

[0063] And by utilizing the deformation of the supporting elastic ring 64, a pushing force is applied to the spherical end of the U-shaped rod 751, so that the U-shaped rod 751 moves toward the inner direction of the inner cylinder 72, and the conical spring 752 is compressed, and under the connection of the right-angle connecting rod, the crescent block 753 moves toward the position close to the piston 73, so that the piston 73 can be supported by two symmetrical crescent blocks 753;

[0064] Moreover, the ball 754 fits the outer circumferential surface of the piston 73, and when the piston 73 moves upward under the pressure of the gas, the rolling friction of the ball 754 can be utilized, so that the piston 73 moves smoothly as a whole;

[0065] Through the control of the single chip microcomputer 5, the density value of sulfur hexafluoride gas is timely transmitted digitally to the outside through the transmitter 4.

[0066] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A digital remote transmission SF6 gas density meter, characterized in that: include: A housing (1), a pointer (2) being mounted in the middle of an outer end surface of the housing (1), a driver (3) being mounted in an inner cavity of the housing (1) and close to the pointer (2), an output end of the driver (3) being fixedly mounted between the pointer (2), a transmitter (4) being mounted on the side of an outer circular surface of the housing (1), and a single-chip computer (5) being mounted on the side of a bottom of the inner cavity of the housing (1); An anti-leakage component (6), the anti-leakage component (6) being used to seal SF6 gas, the anti-leakage component (6) being installed at the middle of the bottom of the outer cylindrical surface of the housing (1); The anti-leakage component (6) comprises an outer cylinder (61), the top of the outer cylinder (61) is fixedly mounted at the middle of the bottom of the outer cylindrical surface of the outer shell (1), an annular ring (62) is mounted at the bent surface of the bottom of the outer cylinder (61), a through hole (63) is provided at the edge of the outer side of the annular ring (62), a supporting elastic ring (64) is mounted on the circumferential surface of the inner side of the annular ring (62), and a strip-shaped hole (65) is provided at the middle of the inner side of the supporting elastic ring (64); A gas detection mechanism (7), the gas detection mechanism (7) being used to monitor gas density, the gas detection mechanism (7) being installed in the middle of the housing (1); The gas detection mechanism (7) comprises a pressure sensor (71) and an inner tube (72); the pressure sensor (71) is mounted in the middle of the top of the inner cavity of the outer shell (1); the inner tube (72) is fixedly mounted in the middle of the outer tube (61); a piston (73) is slidably mounted in the middle of the inner tube (72); an elastic strip (74) is fixedly mounted between the top of the piston (73) and the pressure-bearing end of the pressure sensor (71); and a supporting component (75) is mounted on the outer cylindrical surface of the inner tube (72) and close to the supporting elastic ring (64); The supporting assembly (75) comprises a U-shaped rod (751), the U-shaped rod (751) is slidably mounted on the outer cylindrical surface of the inner cylinder (72) and close to the supporting elastic ring (64) through a sliding sleeve, the U-shaped rod (751) and the inner cylinder (72) are sealed and adapted, a conical spring (752) is fixedly mounted between the spherical end of the U-shaped rod (751) and the outer cylindrical surface of the inner cylinder (72), a crescent block (753) is fixedly mounted at a bend on the outer side of the U-shaped rod (751) and close to the piston (73) through a right-angle connecting rod, the crescent block (753) is mounted inside the inner cylinder (72), and a ball (754) is rollingly mounted on the arc-shaped concave surface on the outer side of the crescent block (753); There are two crescent blocks (753), and the two crescent blocks (753) are symmetrically installed along the piston (73), and the balls (754) are evenly distributed on the arc-shaped concave surface outside the crescent block (753).

2. A digital remote transmission SF6 gas density meter according to claim 1, characterized in that: The through holes (63) are evenly distributed at the edge of the outer side of the annular ring (62); the material of the annular ring (62) is rubber; and the strip holes (65) are evenly distributed at the middle of the inner side of the supporting elastic ring (64).

3. A digital remote transmission SF6 gas density meter according to claim 1, characterized in that: The inner cylinder (72) passes through the middle of the outer cylinder (61), and the bottom end of the inner cylinder (72) extends to the outside of the outer cylinder (61), and the elastic strip (74) is arc-shaped.

4. A digital remote transmission SF6 gas density meter according to claim 1, characterized in that: The piston (73) and the inner tube (72) are sealed and adapted to each other, and the axis at the middle of the piston (73) coincides with the axis at the middle of the inner tube (72).

5. A digital remote transmission SF6 gas density meter according to claim 1, characterized in that: A wiring assembly (8) is installed on the outer circumferential surface of the housing (1) at a position away from the transmitter (4), and the wiring assembly (8) comprises a rectangular housing (81), the rectangular housing (81) being installed on the outer circumferential surface of the housing (1) at one end away from the transmitter (4), a base (82) being installed in the middle of the interior of the rectangular housing (81), support blocks (83) being fixedly installed at the top and bottom of the inner cavity of the rectangular housing (81), a round rod (84) being fixedly installed at one end of the support block (83) close to the base (82), corresponding two sides of the inner cavity of the rectangular housing (81) being provided with snap-fit ​​grooves (85), and a terminal module (86) being installed at one end of the rectangular housing (81) away from the housing (1).

6. A digital remote transmission SF6 gas density meter according to claim 5, characterized in that: The support block (83) is made of rubber. The clamping groove (85) is circular. There are two clamping grooves (85), and the two clamping grooves (85) are symmetrically installed along the base (82).

7. A digital remote transmission SF6 gas density meter according to claim 5, characterized in that: The terminal module (86) comprises a connection seat (861), the connection seat (861) being mounted at one end of the rectangular shell (81) away from the outer shell (1), a plug-in terminal (862) being mounted in the middle of the outer plane of the connection seat (861), a positioning rod (863) being fixedly mounted on the outer side of the connection seat (861) and close to the plug-in terminal (862), an arc-shaped groove (864) being provided in the middle of the outer circumferential surface of the positioning rod (863), and an elastic ball head clamping piece (865) being fixedly mounted on the side of the outer side of the connection seat (861), the position of the elastic ball head clamping piece (865) corresponding to the position of the clamping groove (85).

8. A digital remote transmission SF6 gas density meter according to claim 7, characterized in that: There are four positioning rods (863), and the four positioning rods (863) are evenly distributed on the plane outside the connecting seat (861); there are two elastic ball head clamping parts (865), and the two elastic ball head clamping parts (865) are symmetrically installed along the plug terminal (862).

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