A gas leakage measurement and detection device

Abstract

The present invention relates to the technical field of gas leakage metering and detection, and discloses a gas leakage metering and detection device, including a metering device housing, the bottom of the metering device housing is fixedly connected to the top of a sealing sleeve, an oil filling port is provided at the top of the outer wall of the sealing sleeve, an oil drain port is provided at the bottom of the outer wall of the sealing sleeve, two groups of gas pipelines are arranged inside the sealing sleeve, and the outer walls of the two groups of gas pipelines are fixedly connected to the inner wall of the sealing sleeve through sealing strips. The present invention is provided with a temperature control mechanism, which senses the working environment temperature of the gas leakage metering and detection device through the temperature control mechanism, increases friction when the temperature rises, and prevents the gas leakage metering and detection device from being incorrectly read due to the expansion of the gas in the working environment, and is provided with a sealing protection mechanism, which shuts down the gas leakage metering and detection device through the sealing protection mechanism and keeps it in the detection alarm position.

Description

Technical Field

[0001] The invention relates to the technical field of gas leakage measurement and detection, and in particular to a gas leakage measurement and detection device. Background Art

[0002] With the acceleration of industrialization and the growth of energy demand, the use of flammable and explosive gases such as natural gas and coal gas is becoming more and more widespread. However, the leakage of these gases may bring serious safety hazards and environmental pollution. In industrial production, gas leakage detection is very important, because gas leakage will not only cause waste of resources and environmental pollution, but also may cause safety accidents. Therefore, many industrial production fields require the installation of gas leakage metering and detection devices to monitor gas leakage.

[0003] The patent application with application number CN202010231069.0 discloses a metering detection device for gas leakage, including an upper seal and a lower seal, wherein the shape and size of the upper seal are the same as those of the lower seal, and the shapes of the upper seal and the lower seal are semi-cylindrical, and the middle of both sides of the upper seal and the lower seal are provided with semi-circular through holes of the same diameter, and both sides of the inner cavity of the upper seal and the lower seal are fixedly installed with semi-circular tubes located outside the semi-circular through holes. The metering detection device for gas leakage, through the structural design of the upper seal, the lower seal, the semi-circular tube, the airbag, the U-shaped tube and the exhaust mechanism, uses the upper seal and the lower seal to seal the flange connection of the pipeline to be inspected.

[0004] However, when existing gas leakage metering and detection devices are used in a high temperature environment, gas expansion usually causes the gas leakage metering and detection devices to be read incorrectly, resulting in unnecessary maintenance. When the gas leakage is too large, it will directly cause the gas leakage metering and detection device to be unusable and cause environmental pollution, thereby limiting the use of the gas leakage metering and detection device. Summary of the invention

[0005] The purpose of the present invention is to provide a gas leakage measurement and detection device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a gas leakage metering and detection device, comprising a metering device housing, the bottom of the metering device housing is fixedly connected to the top of a sealing sleeve, an oil filling port is provided at the top of the outer wall of the sealing sleeve, an oil drain port is provided at the bottom of the outer wall of the sealing sleeve, two groups of gas pipelines are arranged inside the sealing sleeve, the outer walls of the two groups of gas pipelines are fixedly connected to the inner wall of the sealing sleeve through sealing strips, and the adjacent parts of the two groups of gas pipelines are fixedly connected by bolts, and also includes a metering mechanism, a sealing strip is arranged inside the sealing sleeve to seal the inside of the sealing sleeve, and the metering is more accurate, and the sealing sleeve is filled with sealing oil, so that the metering of the gas leakage metering and detection device is more sensitive;

[0007] The metering mechanism is arranged inside the metering device housing, the metering mechanism includes a metering rod, the metering rod is arranged at the center inside the metering device housing, the outer wall of the metering rod is fixedly connected to the inner wall of the limit ring through a top screw, the outer wall of the metering rod is fixedly connected to the inner wall of the constant pressure plate, the outer wall of the constant pressure plate is fixedly connected to the outer wall of the sealing ring, the outer wall of the metering rod is fixedly connected to the inner wall of the sealing plate, the outer wall of the sealing plate is fixedly connected to the outer wall of the sealing ring, a high and low pressure protection mechanism is arranged above the constant pressure plate, a sealing protection mechanism is arranged below the sealing plate, and a temperature control mechanism is arranged in the gap between the constant pressure plate and the sealing plate;

[0008] The temperature control mechanism includes a fixed sleeve 1, the inner wall of the fixed sleeve 1 is fixedly connected to the outer wall of the metering rod, the outer wall of the fixed sleeve 1 is provided with a supporting mechanism, and the supporting mechanism includes a supporting sleeve 1, the end face of the supporting sleeve 1 close to the fixed sleeve 1 is fixedly connected to the outer wall of the fixed sleeve 1, the outer wall of the supporting sleeve 1 is provided with a sliding groove 1, the groove wall of the sliding groove 1 is slidably connected to a sliding rod 1 through a slider, the end face of the sliding rod 1 away from the supporting sleeve 1 is fixedly connected to the outer wall of the support block, the outer wall of the sliding rod 1 is provided with a spring 1, and the spring One end is fixedly connected to the end face of the support sleeve close to the spring, and the other end is fixedly connected to the outer wall of the support block. The upper and lower outer walls of the support block are hinged to the two groups of clamping support plates through hinge blocks. The outer walls of the two groups of clamping support plates are hinged to one end of the hinge rod close to the clamping support plate through hinge blocks. The side of each group of hinge rods close to the support sleeve is fixedly connected to the outer wall of the support sleeve through a connecting block. The outer wall of the support block is fixedly connected to the outer wall of the airbag. The airbag is made of rubber and is filled with high-pressure gas, which makes the airbag more sensitive to the working environment temperature.

[0009] According to the above technical solution, the sealing protection mechanism includes a sealing inner sleeve, the inner wall of the sealing inner sleeve is fixedly connected to the bottom of the outer wall of the metering rod, the outer wall of the sealing inner sleeve is fixedly connected to the outer wall of the second sealing ring, the outer wall of the sealing inner sleeve is fixedly connected to the outer wall of the third sealing ring, the outer wall of the sealing inner sleeve is fixedly connected to the outer wall of the fourth sealing ring, the bottom of the inner wall of the metering device housing is fixedly connected to the outer wall of the fifth sealing ring, the sealing protection mechanism also includes a sealing outer sleeve, the outer wall of the sealing outer sleeve is fixedly connected to the inner wall of the metering device housing, a sliding groove 2 is opened inside the sealing outer sleeve, a buckle mechanism is arranged inside the sliding groove 2, and the buckle mechanism The structure includes a support buckle, the outer wall of the support buckle is slidably connected to the groove wall of the second sliding groove, the outer wall of the support buckle is fixedly connected to the end face of the second sliding rod close to the support buckle, the outer wall of the second sliding rod is provided with a support sleeve 2, the end face of the second support sleeve close to the housing of the metering device is fixedly connected to the inner wall of the housing of the metering device, the outer wall of the second support sleeve is provided with a sliding groove 3, the outer wall of the second sliding rod is slidably connected to the groove wall of the third sliding groove through a slider, the outer wall of the second sliding rod is provided with a spring 2, one end of the second spring is fixedly connected to the outer wall of the support buckle, and the other end is fixedly connected to the end face of the second support sleeve close to the housing of the second sliding rod.

[0010] According to the above technical scheme, the high and low pressure protection mechanism includes a fixed sleeve two, the inner wall of the fixed sleeve two is slidably connected to the outer wall of the metering rod, the outer wall of the fixed sleeve two is fixedly connected to the end face of the support rod one on one side close to the fixed sleeve two, the end face of the support rod one on the side away from the fixed sleeve two is fixedly connected to the inner wall of the metering device shell, the outer wall of the support rod one is fixedly connected to the inner wall of the fixed sleeve three, the bottom of the outer wall of the fixed sleeve three is provided with a docking rod one, the docking rod one includes a support rod two, the top of the support rod two is fixedly connected to the bottom of the outer wall of the fixed sleeve three, the outer wall of the support rod two is slidably connected to the sliding groove four groove wall opened on the outer wall of the sliding sleeve one through a slider, the outer wall of the support rod two is provided with a spring three, one end of the spring three is fixedly connected to the outer wall of the fixed sleeve three, and the other end is fixedly connected to the top of the sliding sleeve one, the sliding sleeve An outer wall is provided with a sliding groove five, and the bottom of the sliding sleeve one is fixedly connected to the top of the ball head docking rod. The high and low pressure protection mechanism also includes a docking rod two, and the docking rod two includes a support rod three, and the bottom of the support rod three is fixedly connected to the top of the constant pressure plate. The outer wall of the support rod three is slidably connected to the sliding groove six wall provided on the outer wall of the sliding sleeve two through a sliding block. The outer wall of the support rod three is provided with a spring four, and one end of the spring four is fixedly connected to the top of the constant pressure plate, and the other end is fixedly connected to the bottom of the sliding sleeve two. The outer wall of the sliding sleeve two is provided with a sliding groove seven, and the top of the sliding sleeve two is fixedly connected to the bottom of the docking sleeve rod. The outer wall of the sliding sleeve two is provided with a vertical limiter, and the top of the outer wall of the vertical limiter is slidably connected to the groove wall of the sliding groove five through a sliding block, and the bottom of the outer wall of the vertical limiter is slidably connected to the groove wall of the sliding groove seven through a sliding block.

[0011] According to the above technical solution, the two sets of sealing rings are in contact with the inner wall of the metering device housing and slide along the inner wall of the metering device housing.

[0012] According to the above technical solution, there are three groups of support mechanisms, and the three groups of support mechanisms are equidistantly arranged on the outer wall of the fixed sleeve with the center line as the axis. The sliding groove penetrates the support sleeve and is opened at the center of the outer wall of the support sleeve. The two groups of clamping support plates are symmetrically arranged on the upper and lower sides of the support block with the center line as the axis, and are swung by the hinge rod to contact the outer wall of the airbag. The outer wall of the airbag is squeezed by the support block through a spring to contact the inner wall of the metering device shell, and slides along the inner wall of the metering device shell.

[0013] According to the above technical solution, there are three groups of sliding grooves 2, and the three groups of sliding grooves 2 are equidistantly arrayed inside the sealing sleeve with the center line as the axis, and a snap mechanism is provided in the three groups of sliding grooves 2. The support snap is protruded from the inner wall of the sealing sleeve by spring extrusion, and is snapped with the spherical head at the bottom of the metering rod through the upward movement of the metering rod. The sliding groove three penetrates the outer wall of the support sleeve 2 and is opened on the center line of the support sleeve 2.

[0014] According to the above technical solution, there are three groups of support rods 1, and the three groups of support rods 1 are equidistantly arrayed on the outer wall of fixed sleeve 2 with the center line as the axis. There are three groups of docking rods 2, and the three groups of docking rods 2 are equidistantly arrayed on the surface of the constant pressure plate with the center line as the axis, and their positions correspond to the positions of docking rods 1. The sliding grooves 4 and 5 both penetrate the outer wall of sliding sleeve 1 and are arranged on the center line of sliding sleeve 1. The sliding grooves 6 and 7 both penetrate the outer wall of sliding sleeve 2 and are arranged on the center line of sliding sleeve 2.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The gas leakage metering and detection device is provided with a temperature control mechanism, which senses the working environment temperature of the gas leakage metering and detection device and increases friction when the temperature rises, thereby preventing the gas leakage metering and detection device from being incorrectly read due to gas expansion caused by the rising temperature of the working environment, so that the gas leakage metering and detection device can be used normally.

[0017] 2. The gas leakage metering and detection device is provided with a sealing protection mechanism. When the gas leakage is too large and exceeds the detection upper limit of the gas leakage metering and detection device, the sealing protection mechanism will shut down the gas leakage metering and detection device to stop detection and keep it in the detection alarm position. At the same time, the sealing protection mechanism can temporarily block the gas leakage, greatly reducing the gas leakage. After maintenance, the gas leakage metering and detection device can continue to be used normally.

[0018] 3. The gas leakage metering and detection device is provided with a high and low pressure protection mechanism. When the gas leakage is too small, the high and low pressure protection mechanism is not provided with any elastic mechanism, so that the gas leakage metering and detection device is more sensitive to gas leakage. When the gas leakage is large, the gas is compressed by the high and low pressure protection mechanism, so that the range of the gas leakage metering and detection device is increased, and the auxiliary sealing protection mechanism is reset, so that the gas leakage metering and detection device can be used normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2 is a cross-sectional view of the structure of the present invention;

[0021] Figure 3 is a cross-sectional view of the sealing sleeve of the present invention;

[0022] Figure 4 It is a structural schematic diagram of the metering mechanism of the present invention;

[0023] Figure 5 It is a structural schematic diagram of the temperature control mechanism of the present invention;

[0024] Figure 6 It is a structural schematic diagram of the support mechanism of the present invention;

[0025] Figure 7 It is a structural schematic diagram of the sealing protection mechanism of the present invention;

[0026] Figure 8 It is a structural schematic diagram of the sealing protection mechanism of the present invention;

[0027] Fig. 9 It is a structural schematic diagram of the buckle mechanism of the present invention;

[0028] Fig.10 It is a structural schematic diagram of the high and low voltage protection mechanism of the present invention;

[0029] Fig.11 It is a structural schematic diagram of a docking rod 1 of the present invention;

[0030] Fig.12 It is a structural schematic diagram of the docking rod 2 of the present invention.

[0031] In the figure: 1. housing of metering device; 2. sealing sleeve; 3. gas pipeline; 4. oil filling port; 5. oil drain port; 6. metering mechanism; 601. metering rod; 602. limit ring; 603. sealing ring 1; 604. constant pressure plate; 605. sealing plate; 61. temperature control mechanism; 611. fixed sleeve 1; 612. supporting mechanism; 6121. supporting sleeve 1; 6122. sliding groove 1; 6123. sliding rod 1; 6124. spring 1; 6125. supporting block; 6126. hinged rod; 6127. clamping support plate; 613. airbag; 62. sealing protection mechanism; 621. sealing inner sleeve; 622. sealing ring 2; 623. sealing ring 3; 624. sealing ring 4; 625. sealing ring 5; 626. sealing outer sleeve; 62 7. Buckle mechanism; 6271. Sliding groove three; 6272. Support sleeve two; 6273. Spring two; 6274. Sliding rod two; 6275. Support buckle; 628. Sliding groove two; 63. High and low pressure protection mechanism; 631. Fixed sleeve two; 632. Fixed sleeve three; 633. Support rod one; 634. Docking rod one; 6341. Support rod two; 6342. Spring three; 6343. Sliding sleeve one; 6344. Sliding groove four; 6345. Sliding groove five; 6346. Ball head docking rod; 635. Vertical limiter; 636. Docking rod two; 6361. Support rod three; 6362. Spring four; 6363. Sliding sleeve two; 6364. Sliding groove six; 6365. Sliding groove seven; 6366. Docking sleeve rod. DETAILED DESCRIPTION

[0032] 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.

[0033] For example, see Figure 1-Figure 6 The present invention provides a technical solution: a gas leakage metering and detection device, including a metering device housing 1, the bottom of the metering device housing 1 is fixedly connected to the top of a sealing sleeve 2, an oil filling port 4 is provided on the top of the outer wall of the sealing sleeve 2, an oil drain port 5 is provided on the bottom of the outer wall of the sealing sleeve 2, two groups of gas pipelines 3 are arranged inside the sealing sleeve 2, the outer walls of the two groups of gas pipelines 3 are fixedly connected to the inner wall of the sealing sleeve 2 through sealing strips, and the adjacent parts of the two groups of gas pipelines 3 are fixedly connected by bolts, and also includes:

[0034] Metering mechanism 6, metering mechanism 6 is arranged inside metering device housing 1, metering mechanism 6 includes metering rod 601, metering rod 601 is arranged inside center of metering device housing 1, outer wall of metering rod 601 is fixedly connected with inner wall of limit ring 602 through top screw, outer wall of metering rod 601 is fixedly connected with inner wall of constant pressure plate 604, outer wall of constant pressure plate 604 is fixedly connected with outer wall of sealing ring 1 603, outer wall of metering rod 601 is fixedly connected with inner wall of sealing plate 605, outer wall of sealing plate 605 is fixedly connected with outer wall of sealing ring 1 603, two groups of sealing ring 1 603 are in contact with inner wall of metering device housing 1, and slide along inner wall of metering device housing 1, high and low pressure protection mechanism 63 is arranged above constant pressure plate 604, sealing protection mechanism 62 is arranged below sealing plate 605, and temperature control mechanism 61 is arranged in gap between constant pressure plate 604 and sealing plate 605;

[0035] The temperature control mechanism 61 includes a fixed sleeve 611, the inner wall of the fixed sleeve 611 is fixedly connected to the outer wall of the metering rod 601, and the outer wall of the fixed sleeve 611 is provided with a support mechanism 612. The support mechanism 612 has three groups, and the three groups of support mechanisms 612 are arranged on the outer wall of the fixed sleeve 611 with the center line as the axis. The support mechanisms 612 all include a support sleeve 6121, and the end surface of the support sleeve 6121 close to one side of the fixed sleeve 611 is fixedly connected to the outer wall of the fixed sleeve 611, and the support sleeve A sliding groove 6122 is provided on the outer wall of the support sleeve 6121, and the sliding groove 6122 penetrates the support sleeve 6121 and is provided at the center of the outer wall of the support sleeve 6121. The groove wall of the sliding groove 6122 is slidably connected to a sliding rod 6123 through a slider. The end face of the sliding rod 6123 away from the support sleeve 6121 is fixedly connected to the outer wall of the support block 6125. A spring 6124 is provided on the outer wall of the sliding rod 6123. One end of the spring 6124 is connected to the support sleeve 6121 near the spring 6123. One end face of the support block 6125 is fixedly connected, and the other end is fixedly connected to the outer wall of the support block 6125. The upper and lower outer walls of the support block 6125 are hingedly connected to the two sets of clamping support plates 6127 through the hinge block. The outer walls of the two sets of clamping support plates 6127 are hingedly connected to one end of the clamping support plate 6127 through the hinge block and the hinge rod 6126. The two sets of clamping support plates 6127 are symmetrically arranged on the upper and lower sides of the support block 6125 with the center line as the axis, and are swung to contact the outer wall of the airbag 613 through the hinge rod 6126. Each set of hinge rods 6126 The side 26 close to the support sleeve 6121 is fixedly connected to the outer wall of the support sleeve 6121 through a connecting block, the outer wall of the support block 6125 is fixedly connected to the outer wall of the airbag 613, the outer wall of the airbag 613 is squeezed by a spring 6124 to contact the inner wall of the metering device housing 1 and slide along the inner wall of the metering device housing 1, the airbag 613 senses the temperature of the working environment, increases the friction force on the inner wall of the metering device housing 1, and prevents the gas leakage metering detection device from making erroneous readings due to temperature changes.

[0036] The working principle of this embodiment is as follows: when the gas leakage metering detection device is used, the sealing sleeve 2 is fixed to the flange connection of the gas pipeline 3, and sealing oil is injected into the sealing sleeve 2, and the limit ring 602 is adjusted to make the metering rod 601 to the normal position. When the gas leaks, the sealing plate 605 is squeezed by the gas to make the metering rod 601 move upward. When the working environment temperature rises, the airbag 613 becomes larger and the hinge connection between the clamping support plate 6127 and the hinged rod 6126 is increased. At the same time, the hinged rod 6126 supports the airbag 613 under the squeeze of the spring 6124, so that the friction between the airbag 613 and the metering device housing 1 becomes larger. , to prevent the gas leakage metering detection device from being read incorrectly when the ambient temperature rises. When the gas leakage is large, the sealing protection mechanism 62 raises the metering rod 601 to close the gas leakage metering detection device and stop measuring, protecting the gas leakage metering detection device from being damaged by the leaked gas. At the same time, the metering rod 601 is always in the alarm position, which greatly reduces gas leakage. When the gas leakage is small, the high and low pressure protection mechanism 63 can be used for sensitive detection. When the gas leakage is large, the range of the gas leakage metering detection device can be increased. During maintenance, the sealing oil is recovered through the oil drain port 5, and the sealing sleeve 2 is opened to repair the pipeline.

[0037] For example 2, please refer to Figure 7-Figure 9The present invention provides a technical solution: the sealing protection mechanism 62 includes a sealing inner sleeve 621, the inner wall of the sealing inner sleeve 621 is fixedly connected to the bottom of the outer wall of the metering rod 601, the outer wall of the sealing inner sleeve 621 is fixedly connected to the outer wall of the second sealing ring 622, the outer wall of the sealing inner sleeve 621 is fixedly connected to the outer wall of the third sealing ring 623, the outer wall of the sealing inner sleeve 621 is fixedly connected to the outer wall of the fourth sealing ring 624, the bottom of the inner wall of the metering device housing 1 is fixedly connected to the outer wall of the fifth sealing ring 625, the sealing protection mechanism 62 also includes a sealing outer sleeve 626, the outer wall of the sealing outer sleeve 626 is fixedly connected to the inner wall of the metering device housing 1 Fixed connection, a second sliding groove 628 is provided inside the sealing sleeve 626, a buckle mechanism 627 is provided inside the second sliding groove 628, there are three groups of the second sliding groove 628, the three groups of second sliding grooves 628 are arranged in an equidistant array with the center line as the axis inside the sealing sleeve 626, and the three groups of second sliding grooves 628 are all provided with a buckle mechanism 627, the buckle mechanism 627 includes a support buckle 6275, the outer wall of the support buckle 6275 is slidably connected with the groove wall of the second sliding groove 628, and the outer wall of the support buckle 6275 is fixedly connected with the end face of the second sliding rod 6274 close to the support buckle 6275. The outer wall of the sliding rod 6274 is provided with a supporting sleeve 6272, and the end face of the supporting sleeve 6272 close to the metering device housing 1 is fixedly connected to the inner wall of the metering device housing 1, and the outer wall of the supporting sleeve 6272 is provided with a sliding groove 6271, which penetrates the outer wall of the supporting sleeve 6272 and is provided on the center line of the supporting sleeve 6272. The outer wall of the sliding rod 6274 is slidably connected to the groove wall of the sliding groove 6271 through a slider, and the outer wall of the sliding rod 6274 is provided with a spring 6273, and one end of the spring 6273 is connected to the supporting buckle 627 5, and the other end is fixedly connected to the outer wall of the supporting sleeve 6272 near the end face of the sliding rod 6274. The supporting buckle 6275 is pressed and protruded from the inner wall of the sealing sleeve 626 by the spring, and is engaged with the spherical head at the bottom of the metering rod 601 by the upward movement of the metering rod 601. When the leakage is large, the spherical head at the bottom of the metering rod 601 is engaged with the supporting buckle 6275, so that the outer wall of the sealing inner sleeve 621 is always in contact with the inner wall of the sealing sleeve 626 to maintain a sealed state, thereby reducing the leakage and protecting the gas leakage metering and detection device from the impact of gas leakage.

[0038] The working principle of this embodiment is: when the gas leakage is large, the gas squeezes the sealing plate 605 to drive the metering rod 601 upward, so that the sealing inner sleeve 621 contacts the sealing outer sleeve 626, and contacts the sealing outer sleeve 626 through the sealing ring 2 622 and the sealing ring 3 623, and the sealing ring 4 624 cooperates with the sealing ring 5 625 to seal the inside of the metering device housing 1, and the spherical head at the bottom of the metering rod 601 moves to the outer wall of the support buckle 6275, and the support buckle 6275 is squeezed by the spring 2 6273 to engage with the spherical head at the bottom of the metering rod 601, so that the metering rod 601 is always in the alarm position. After the maintenance is completed, the top of the metering device housing 1 is opened to press the metering rod 601, so that the metering rod 601 can be reset and used normally.

[0039] For example 3, please refer to Figure 10-12The present invention provides a technical solution: the high and low pressure protection mechanism 63 includes a fixed sleeve 2 631, the inner wall of the fixed sleeve 2 631 is slidably connected to the outer wall of the metering rod 601, the outer wall of the fixed sleeve 2 631 is fixedly connected to the end face of the support rod 1 633 close to the fixed sleeve 2 631, there are three groups of support rods 1 633, the three groups of support rods 1 633 are arrayed equidistantly on the outer wall of the fixed sleeve 2 631 with the center line as the axis, the end face of the support rod 1 633 away from the fixed sleeve 2 631 is fixedly connected to the inner wall of the metering device housing 1, the outer wall of the support rod 1 633 is fixedly connected to the inner wall of the fixed sleeve 3 632, and a docking rod 1 634 is arranged at the bottom of the outer wall of the fixed sleeve 3 632, and the docking rod 1 634 includes a support rod 2 6341, The top of the second support rod 6341 is fixedly connected to the bottom of the outer wall of the third fixed sleeve 632. The outer wall of the second support rod 6341 is slidably connected to the wall of the fourth sliding groove 6344 opened on the outer wall of the first sliding sleeve 6343 through a slider. The fourth sliding groove 6344 and the fifth sliding groove 6345 both penetrate the outer wall of the first sliding sleeve 6343 and are arranged on the center line of the first sliding sleeve 6343. The outer wall of the second support rod 6341 is provided with a spring three 6342. One end of the spring three 6342 is fixedly connected to the outer wall of the third fixed sleeve 632, and the other end is fixedly connected to the top of the first sliding sleeve 6343. The outer wall of the first sliding sleeve 6343 is provided with a sliding groove five 6345. The bottom of the first sliding sleeve 6343 is fixedly connected to the top of the ball head docking rod 6346. The high and low pressure protection mechanism 63 also includes a docking rod 2 636. The docking rod 2 636 has three groups. The three groups of docking rods 2 636 are arranged equidistantly on the surface of the constant pressure plate 604 with the center line as the axis, and their positions correspond to the positions of the docking rod 1 634. The docking rod 2 636 includes a support rod 3 6361. The bottom of the support rod 3 6361 is fixedly connected to the top of the constant pressure plate 604. The outer wall of the support rod 3 6361 is slidably connected to the wall of the sliding groove 6 6364 opened on the outer wall of the sliding sleeve 2 6363 through a slider. The sliding groove 6 6364 and the sliding groove 7 6365 both penetrate the outer wall of the sliding sleeve 2 6363 and are arranged on the center line of the sliding sleeve 2 6363. The outer wall of the support rod 3 6361 is provided with a spring 4 6362. The spring 4 6364 is provided on the outer wall of the support rod 3 One end of 362 is fixedly connected to the top of the constant pressure plate 604, and the other end is fixedly connected to the bottom of the sliding sleeve 2 6363. The outer wall of the sliding sleeve 2 6363 is provided with a sliding groove 7 6365. The top of the sliding sleeve 2 6363 is fixedly connected to the bottom of the docking sleeve rod 6366. The outer wall of the sliding sleeve 2 6363 is provided with a vertical limiter 635. The top of the outer wall of the vertical limiter 635 is slidably connected to the wall of the sliding groove 5 6345 through a slider. The bottom of the outer wall of the vertical limiter 635 is slidably connected to the wall of the sliding groove 7 6365 through a slider. When the leakage amount is large, the ball head docking rod 6346 and the docking sleeve rod 6366 are squeezed by the spring 3 6342 and the spring 4 6362, so that the range of the gas leakage metering and detection device is increased.

[0040] The working principle of this embodiment is: the gap between the ball head docking rod 6346 and the docking sleeve rod 6366 makes the gas leakage metering detection device more sensitive to the metering of the leaking gas, and the metering rod 601 continues to move upward, the ball head docking rod 6346 and the docking sleeve rod 6366 pass through the vertical limiter 635, so that the ball head docking rod 6346 and the docking sleeve rod 6366 are in contact and cooperate with each other, and the sliding sleeve one 6343 and the sliding sleeve two 6363 are squeezed by the spring four 6362 and the spring three 6342, so that the leaking gas is compressed when it is large, so that the measuring range of the gas leakage metering detection device is increased, and at the same time, the metering rod 601 is reset after maintenance when the gas leakage exceeds the measuring range through squeezing by the spring three 6342 and the spring four 6362.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gas leakage metering and detection device, comprising a metering device housing (1), the bottom of the metering device housing (1) is fixedly connected to the top of a sealing sleeve (2), an oil filling port (4) is provided at the top of the outer wall of the sealing sleeve (2), an oil drain port (5) is provided at the bottom of the outer wall of the sealing sleeve (2), two groups of gas pipelines (3) are arranged inside the sealing sleeve (2), the outer walls of the two groups of gas pipelines (3) are fixedly connected to the inner wall of the sealing sleeve (2) through sealing strips, and the two groups of gas pipelines (3) are fixedly connected at adjacent positions by bolts, characterized in that: Also includes: A metering mechanism (6), wherein the metering mechanism (6) is arranged inside a metering device housing (1), and the metering mechanism (6) comprises a metering rod (601), wherein the metering rod (601) is arranged at the center inside the metering device housing (1), wherein the outer wall of the metering rod (601) is fixedly connected to the inner wall of a limit ring (602) via a top screw, wherein the outer wall of the metering rod (601) is fixedly connected to the inner wall of a constant pressure plate (604), and wherein the outer wall of the constant pressure plate (604) is fixedly connected to a sealing ring. The outer wall of the metering rod (601) is fixedly connected to the inner wall of the sealing plate (605), the outer wall of the sealing plate (605) is fixedly connected to the outer wall of the sealing ring (603), a high and low pressure protection mechanism (63) is arranged above the constant pressure plate (604), a sealing protection mechanism (62) is arranged below the sealing plate (605), and a temperature control mechanism (61) is arranged in the gap between the constant pressure plate (604) and the sealing plate (605); The temperature control mechanism (61) includes a fixed sleeve (611), the inner wall of the fixed sleeve (611) is fixedly connected to the outer wall of the metering rod (601), the outer wall of the fixed sleeve (611) is provided with a support mechanism (612), and the support mechanism (612) includes a support sleeve (6121), the end surface of the support sleeve (6121) close to the fixed sleeve (611) is fixedly connected to the outer wall of the fixed sleeve (611), the outer wall of the support sleeve (6121) is provided with a sliding groove (6122), the groove wall of the sliding groove (6122) is slidably connected to a sliding rod (6123) through a slider, and the end surface of the sliding rod (6123) away from the support sleeve (6121) is fixedly connected to the outer wall of the support block (6125), The outer wall of the sliding rod (6123) is provided with a spring (6124), one end of the spring (6124) is fixedly connected to the end face of the support sleeve (6121) close to the spring (6124), and the other end is fixedly connected to the outer wall of the support block (6125), the upper and lower outer walls of the support block (6125) are hingedly connected to the two groups of clamping support plates (6127) through hinge blocks, the outer walls of the two groups of clamping support plates (6127) are hingedly connected to one end of the hinge rod (6126) close to the clamping support plate (6127) through hinge blocks, each group of the hinge rods (6126) is fixedly connected to the outer wall of the support sleeve (6121) through a connecting block on one side close to the support sleeve (6121), and the outer wall of the support block (6125) is fixedly connected to the outer wall of the airbag (613).

2. A gas leakage measurement and detection device according to claim 1, characterized in that: The sealing protection mechanism (62) comprises a sealing inner sleeve (621), the inner wall of the sealing inner sleeve (621) is fixedly connected to the bottom of the outer wall of the metering rod (601), the outer wall of the sealing inner sleeve (621) is fixedly connected to the outer wall of the second sealing ring (622), the outer wall of the sealing inner sleeve (621) is fixedly connected to the outer wall of the third sealing ring (623), the outer wall of the sealing inner sleeve (621) is fixedly connected to the outer wall of the fourth sealing ring (624), the bottom of the inner wall of the metering device housing (1) is fixedly connected to the outer wall of the fifth sealing ring (625), the sealing protection mechanism (62) further comprises a sealing outer sleeve (626), the outer wall of the sealing outer sleeve (626) is fixedly connected to the inner wall of the metering device housing (1), a sliding groove (628) is provided inside the sealing outer sleeve (626), a buckle mechanism (627) is provided inside the sliding groove (628), and the buckle mechanism (627) comprises a supporting buckle (6275), The outer wall of the support buckle (6275) is slidably connected to the wall of the second sliding groove (628), and the outer wall of the support buckle (6275) is fixedly connected to the end face of the second sliding rod (6274) close to the support buckle (6275). The outer wall of the second sliding rod (6274) is provided with a support sleeve (6272). The end face of the second supporting sleeve (6272) close to the metering device housing (1) is fixedly connected to the inner wall of the metering device housing (1). The outer wall of sleeve 2 (6272) is provided with a sliding groove 3 (6271), and the outer wall of the sliding rod 2 (6274) is slidably connected to the groove wall of the sliding groove 3 (6271) through a slider, and the outer wall of the sliding rod 2 (6274) is provided with a spring 2 (6273), one end of the spring 2 (6273) is fixedly connected to the outer wall of the support buckle (6275), and the other end is fixedly connected to the end face of the support sleeve 2 (6272) close to the sliding rod 2 (6274).

3. A gas leakage measurement and detection device according to claim 1, characterized in that: The high and low pressure protection mechanism (63) comprises a second fixed sleeve (631), the inner wall of the second fixed sleeve (631) is slidably connected to the outer wall of the metering rod (601), the outer wall of the second fixed sleeve (631) is fixedly connected to the end face of the first support rod (633) close to the second fixed sleeve (631), the end face of the first support rod (633) away from the second fixed sleeve (631) is fixedly connected to the inner wall of the metering device housing (1), the outer wall of the first support rod (633) is fixedly connected to the inner wall of the third fixed sleeve (632), and the bottom of the outer wall of the third fixed sleeve (632) is provided with a docking rod (634), the docking rod (634) is fixedly connected to the inner wall of the metering device housing (1). The connecting rod 1 (634) includes a supporting rod 2 (6341), the top of the supporting rod 2 (6341) is fixedly connected to the bottom of the outer wall of the fixed sleeve 3 (632), the outer wall of the supporting rod 2 (6341) is slidably connected to the sliding groove 4 (6344) provided on the outer wall of the sliding sleeve 1 (6343) through a sliding block, the outer wall of the supporting rod 2 (6341) is provided with a spring 3 (6342), one end of the spring 3 (6342) is fixedly connected to the outer wall of the fixed sleeve 3 (632), and the other end is fixedly connected to the top of the sliding sleeve 1 (6343), and the outer wall of the sliding sleeve 1 (6343) is provided with a sliding groove 5 (6345), the bottom of the sliding sleeve 1 (6343) is fixedly connected to the top of the ball head docking rod (6346), the high and low pressure protection mechanism (63) also includes a docking rod 2 (636), the docking rod 2 (636) includes a support rod 3 (6361), the bottom of the support rod 3 (6361) is fixedly connected to the top of the constant pressure plate (604), the outer wall of the support rod 3 (6361) is slidably connected to the sliding groove 6 (6364) groove wall opened on the outer wall of the sliding sleeve 2 (6363) through a slider, the outer wall of the support rod 3 (6361) is provided with a spring 4 (6362), the spring 4 (63 62) one end is fixedly connected to the top of the constant pressure plate (604), and the other end is fixedly connected to the bottom of the sliding sleeve two (6363), the outer wall of the sliding sleeve two (6363) is provided with a sliding groove seven (6365), the top of the sliding sleeve two (6363) is fixedly connected to the bottom of the docking sleeve rod (6366), the outer wall of the sliding sleeve two (6363) is provided with a vertical limiter (635), the top of the outer wall of the vertical limiter (635) is slidably connected to the groove wall of the sliding groove five (6345) through a sliding block, and the bottom of the outer wall of the vertical limiter (635) is slidably connected to the groove wall of the sliding groove seven (6365) through a sliding block.

4. A gas leakage measurement and detection device according to claim 1, characterized in that: The two sets of sealing rings (603) are in contact with the inner wall of the metering device housing (1) and slide along the inner wall of the metering device housing (1).

5. A gas leakage measurement and detection device according to claim 1, characterized in that: The support mechanism (612) has three groups. The three groups of support mechanisms (612) are arranged equidistantly on the outer wall of the fixed sleeve (611) with the center line as the axis. The sliding groove (6122) penetrates the support sleeve (6121) and is opened at the center of the outer wall of the support sleeve (6121). The two groups of clamping support plates (6127) are symmetrically arranged on the upper and lower sides of the support block (6125) with the center line as the axis, and are swung through the hinge rod (6126) to contact the outer wall of the airbag (613). The outer wall of the airbag (613) is squeezed by the support block (6125) through the spring (6124) to contact the inner wall of the metering device housing (1), and slides along the inner wall of the metering device housing (1).

6. A gas leakage measurement and detection device according to claim 2, characterized in that: There are three groups of sliding grooves (628), and the three groups of sliding grooves (628) are arranged in an equidistant array inside the sealing sleeve (626) with the center line as the axis, and a snap mechanism (627) is provided in each of the three groups of sliding grooves (628). The support snap (6275) is protruded from the inner wall of the sealing sleeve (626) by spring compression, and is snapped with the spherical head at the bottom of the metering rod (601) when the metering rod (601) moves upward. The sliding groove (6271) passes through the outer wall of the supporting sleeve (6272) and is opened on the center line of the supporting sleeve (6272).

7. A gas leakage measurement and detection device according to claim 3, characterized in that: There are three groups of support rods one (633), and the three groups of support rods one (633) are arranged equidistantly on the outer wall of fixed sleeve two (631) with the center line as the axis. There are three groups of docking rods two (636), and the three groups of docking rods two (636) are arranged equidistantly on the surface of constant pressure plate (604) with the center line as the axis, and their positions correspond to the positions of docking rods one (634). Both sliding grooves four (6344) and sliding grooves five (6345) penetrate the outer wall of sliding sleeve one (6343) and are arranged on the center line of sliding sleeve one (6343). Both sliding grooves six (6364) and sliding grooves seven (6365) penetrate the outer wall of sliding sleeve two (6363) and are arranged on the center line of sliding sleeve two (6363).

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