A fracturing detection device for instruments and meters

Abstract

This utility model discloses an instrument fracturing detection device, relating to the field of instrument fracturing detection. The instrument fracturing detection device includes a base, and further includes: a detection cylinder, fixedly mounted on the base, wherein a sliding piston disc is installed inside the detection cylinder, a pressure sensor is provided on the inner wall of the lower end of the detection cylinder, and a connecting pipe is fixedly connected to the detection cylinder; a gas supply pipe connected to the detection cylinder; and an instrument body detachably connected to the output end of the connecting pipe, wherein a sealing gasket is provided on the output end of the connecting pipe, and a fastening ring abutting against the sealing gasket is fixedly installed on the instrument body. This utility model, through a multi-seal structure of sealing gasket, air bladder, and sealing groove, greatly prevents gas leakage from the gap at the connection between the instrument body and the connecting pipe during detection, ensuring stable pressure during the detection process and ensuring detection accuracy.

Description

Technical Field

[0001] This utility model belongs to the field of instrument and fracturing detection technology, specifically, it relates to an instrument and fracturing detection device. Background Technology

[0002] Instruments and meters are devices used to measure, observe, and calculate various physical quantities and physical properties. Vacuum leak detectors, pressure gauges, and length measuring instruments are all examples of instruments and meters.

[0003] Currently, after pressure gauges are manufactured, their dial's pressure resistance needs to be assessed through fracturing testing to determine if it meets standards. For example, patent application number 202410785966.4, entitled "An Instrument Fracturing Testing Device," discloses such a device, relating to the field of instrument fracturing testing. This device includes a protective cylinder and a sealing cap detachably connected to the protective cylinder; a pressure boosting pipe fixedly connected to the protective cylinder, wherein a one-way valve is provided on the pressure boosting pipe; a connecting pipe fixedly connected to the protective cylinder; a pressure gauge body threadedly connected to the end of the connecting pipe located inside the protective cylinder; and a sleeve fixedly connected to the end of the connecting pipe located outside the protective cylinder. This invention performs fracturing testing on the pressure gauge dial using multiple pressure methods, including external and internal methods, improving testing accuracy. During testing, it accurately determines the pressure resistance of the pressure gauge dial and whether the seal between the dial and the housing meets standards. Furthermore, by conducting fracturing testing on the pressure gauge body in a sealed environment, it improves the safety of the testing process.

[0004] The aforementioned patent also has the following defects: due to the lack of an effective sealing structure at the connection between the pressure gauge body and the connecting pipe, gas can easily leak through the gap at the connection between the pressure gauge body and the connecting pipe when the pressure resistance of the pressure gauge dial is tested.

[0005] In addition, existing testing equipment usually adopts simple sealing methods, such as a single sealing ring or threaded seal. This kind of sealing structure is not good when facing high-pressure testing environment and is prone to gas leakage. Once the gas leaks from the gap at the connection between the instrument body and the connecting pipe, it will not only cause the pressure to be unstable during the testing process, but also cause the test results to deviate significantly and fail to accurately reflect the true pressure resistance performance of the instrument. Therefore, this utility model is proposed. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an instrument fracturing detection device that can overcome or at least partially solve the above problems.

[0007] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0008] A fracturing instrument detection device includes a base and further includes: a detection cylinder fixedly mounted on the base, wherein a sliding piston disc is installed inside the detection cylinder, a pressure sensor is provided on the inner wall of the lower end of the detection cylinder, and a connecting pipe is fixedly connected to the detection cylinder; a first gas supply pipe connected to the detection cylinder; an instrument body detachably connected to the output end of the connecting pipe, wherein a sealing gasket is provided on the output end of the connecting pipe, and a fastening ring abutting against the sealing gasket is fixedly installed on the instrument body; an annularly arranged airbag embedded in the output end of the connecting pipe and located below the sealing gasket; and a second gas supply pipe connected to the airbag, wherein multiple sealing grooves are formed on the lower end face of the fastening ring, and the sealing grooves are annularly arranged.

[0009] In order to enable the piston disc to automatically move upward and reset inside the detection cylinder when the gas inside the detection cylinder is discharged, preferably, a tension spring is also included. The tension spring is disposed in the detection cylinder, with one end fixedly connected to the piston disc and the other end fixedly connected to the inner wall of the upper end of the detection cylinder.

[0010] Preferably, the lower end of the detection cylinder is open and detachably connected to a cover plate, and the pressure sensor is fixedly mounted on the cover plate.

[0011] To facilitate maintenance of the pressure sensor, the cover plate is further threadedly connected to the lower end of the detection cylinder.

[0012] For controlling the switching of gas pipeline one and gas pipeline two, preferably, a solenoid valve is also included, which is respectively installed on gas pipeline one and gas pipeline two.

[0013] To facilitate the assembly and disassembly of the instrument body, preferably, the outer wall of the connecting end of the instrument body is threadedly connected to the inner wall of the output end of the connecting pipe.

[0014] In order to prevent debris from the instrument body that fails the fracturing test from flying everywhere during the test, preferably, a receiving plate is fixedly connected to the connecting pipe, a snap ring is fixedly connected to the receiving plate, and a protective cover is covered on the receiving plate. The outer diameter of the snap ring is the same as the inner diameter of the protective cover.

[0015] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0016] This invention employs a multi-layered sealing structure consisting of a sealing gasket, an air bladder, and a sealing groove to greatly prevent gas leakage from the gap between the instrument body and the connecting pipe during testing, ensuring stable pressure and accurate detection. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the base and detection cylinder of this utility model;

[0018] Figure 2 This is a structural schematic diagram of the base, detection cylinder, and pressure gauge of this utility model;

[0019] Figure 3 This is a structural schematic diagram of the base and protective cover of this utility model;

[0020] Figure 4 This is a utility model Figure 1 Enlarged view of section A.

[0021] In the diagram: 1. Base; 101. Detection cylinder; 102. Connecting pipe; 103. Piston disc; 104. Gas supply pipe one; 105. Pressure sensor; 2. Instrument body; 3. Tension spring; 301. Cover plate; 4. Receiving plate; 401. Snap ring; 402. Protective cover; 5. Fastening ring; 501. Sealing gasket; 502. Airbag; 503. Sealing groove; 504. Gas supply pipe two. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0023] Example 1:

[0024] Reference Figure 1 , Figure 2 , Figure 4 A fracturing detection device for instruments includes a base 1 and further includes: a detection cylinder 101, fixedly mounted on the base 1, wherein a sliding piston disc 103 is installed inside the detection cylinder 101, a pressure sensor 105 is provided on the inner wall of the lower end of the detection cylinder 101, and a connecting pipe 102 is fixedly connected to the detection cylinder 101; a first gas supply pipe 104, connected to the detection cylinder 101; an instrument body 2, detachably connected to the output end of the connecting pipe 102, wherein a sealing gasket 501 is provided on the output end of the connecting pipe 102, and a fastening ring 5 that abuts against the sealing gasket 501 is fixedly installed on the instrument body 2; an annularly arranged airbag 502, embedded in the output end of the connecting pipe 102 and located below the sealing gasket 501; and a second gas supply pipe 504, connected to the airbag 502, wherein multiple sealing grooves 503 are formed on the lower end surface of the fastening ring 5, and the sealing grooves 503 are annularly arranged.

[0025] It also includes a tension spring 3, which is disposed in the detection cylinder 101. One end of the tension spring 3 is fixedly connected to the piston disc 103, and the other end is fixedly connected to the inner wall of the upper end of the detection cylinder 101.

[0026] It also includes solenoid valves, which are respectively installed on gas pipeline 104 and gas pipeline 2504.

[0027] Before testing, the instrument body 2 to be tested is installed on the output end of the connecting pipe 102. During the installation process, the fastening ring 5 gradually approaches the sealing gasket 501. When the installation is completed, the two fit tightly together, which initially increases the sealing performance at the connection. Then, the solenoid valve on the second gas supply pipe 504 is opened to inflate the air bag 502. After the air bag 502 expands, it squeezes the sealing gasket 501, making the sealing gasket 501 fit more tightly with the fastening ring 5, further improving the sealing performance. At the same time, the sealing gasket 501 deforms under compression and embeds into the sealing groove 503, forming a multi-seal structure. This multi-seal design greatly prevents gas from leaking from the gap at the connection during subsequent ventilation testing, ensuring stable pressure during the testing process, thereby ensuring the accuracy of the test and avoiding deviations in the test results due to gas leakage.

[0028] During testing, first open the solenoid valve on the gas supply pipe 104, and pressurize the test cylinder 101 by supplying gas through the gas supply pipe 104. The gas then enters the instrument body 2 through the connecting pipe 102, and applies pressure to the dial of the instrument body 2 from the inside out, thereby achieving the cracking test of the dial of the instrument body 2.

[0029] Simultaneously, the gas pressurized into the detection cylinder 101 pushes the piston disc 103 downward and stretches the tension spring 3. When the piston disc 103 comes into contact with the pressure sensor 105, the pressure sensor 105 measures the pressure value applied to the dial of the instrument body 2. Then, the measured pressure information is sent to the central receiving module via a wireless transmitter, and the pressure data is displayed. When the pressure reaches the preset pressure value, the system will automatically alarm and then close the solenoid valve on the gas supply pipe 104 to stop the gas supply to the detection cylinder 101. At this time, by observing whether there is a significant change in the pressure value, it can be determined whether the pressure resistance of the dial of the instrument body 2 meets the standard. If there is a significant change in the pressure value, it means that the pressure resistance of the dial of the instrument body 2 does not meet the standard. If there is no significant change in the pressure value, it means that the pressure resistance of the dial of the instrument body 2 meets the standard.

[0030] Example 2:

[0031] Reference Figure 3A fracturing detection device for instruments and meters is basically the same as that in Embodiment 1. Furthermore, a receiving plate 4 is fixedly connected to the connecting pipe 102, a snap ring 401 is fixedly connected to the receiving plate 4, and a protective cover 402 is covered on the receiving plate 4. The outer diameter of the snap ring 401 and the inner diameter of the protective cover 402 are set to be the same.

[0032] After the instrument body 2 is connected, the protective cover 402 is placed on the receiving plate 4, so that the snap ring 401 engages with the inner wall of the protective cover 402, improving the stability of the protective cover 402 on the receiving plate 4. During testing, this effectively prevents debris from the instrument body 2 that fails the fracturing test from flying everywhere. On the one hand, this avoids debris flying and causing injury to surrounding personnel, ensuring the safety of operators; on the other hand, it prevents debris from flying into other equipment or the working environment, reducing pollution and damage to surrounding equipment and the environment, lowering cleaning and maintenance costs, and ensuring a clean and safe testing working environment.

[0033] Example 3:

[0034] Reference Figure 1 A fracturing detection device for instruments is basically the same as that in Embodiment 1. Furthermore, the lower end of the detection cylinder 101 is open and is detachably connected to a cover plate 301. The pressure sensor 105 is fixedly installed on the cover plate 301. The cover plate 301 is threadedly connected to the lower end of the detection cylinder 101.

[0035] In use, the cover plate 301 is tightly screwed into the lower end of the detection cylinder 101 by threads, ensuring that the pressure sensor 105 can be securely installed on the lower end of the detection cylinder 101, so that the pressure sensor 105 can accurately monitor the pressure changes inside the detection cylinder 101.

[0036] When the pressure sensor 105 needs maintenance, calibration or replacement, simply remove the cover plate 301 from the lower end of the detection cylinder 101 by rotating it. Then, the pressure sensor 105 can be operated directly. After the operation is completed, the cover plate 301 is screwed back onto the lower end of the detection cylinder 101 by thread to restore the device to normal use.

[0037] Example 4:

[0038] Reference Figure 1 A fracturing detection device for instruments is basically the same as that in Embodiment 1, but further, the outer wall of the connecting end of the instrument body 2 is threadedly connected to the inner wall of the output end of the connecting pipe 102.

[0039] During installation, the threads on the outer wall of the instrument body 2 connection end are screwed into the threads on the inner wall of the output end of the connecting pipe 102 to connect the two. During disassembly, the threads are rotated in the opposite direction to separate them. During the testing process, the threaded connection ensures the stability of the connection between the instrument body 2 and the connecting pipe 102, ensuring that there will be no loosening or falling off during the fracturing test, thus ensuring the smooth progress of the test. It also facilitates the disassembly and replacement of the instrument body 2.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model.

Claims

1. An instrumented fracture detection device comprising a base (1), characterised in that, Also includes: A detection cylinder (101) is fixedly installed on the base (1), wherein a sliding piston disc (103) is installed inside the detection cylinder (101), a pressure sensor (105) is provided on the inner wall of the lower end of the detection cylinder (101), and a connecting pipe (102) is fixedly connected to the detection cylinder (101). Gas delivery pipe 1 (104) is connected to the detection cylinder (101); The instrument body (2) is detachably connected to the output end of the connecting pipe (102), wherein a sealing gasket (501) is provided on the output end of the connecting pipe (102), and a fastening ring (5) that abuts against the sealing gasket (501) is fixedly installed on the instrument body (2); An airbag (502) arranged in a ring shape is embedded in the output end of the connecting tube (102) and located below the sealing gasket (501); The second air supply pipe (504) is connected to the airbag (502). The fastening ring (5) has multiple sealing grooves (503) on its lower end surface, and the sealing grooves (503) are arranged in a ring shape.

2. A fracturing detection device for instrument gauges as defined in claim 1, wherein, It also includes a tension spring (3), which is disposed in the detection cylinder (101). One end of the tension spring (3) is fixedly connected to the piston disc (103), and the other end is fixedly connected to the inner wall of the upper end of the detection cylinder (101).

3. A fracturing detection device for instrument gauges as defined in claim 1, wherein, The lower end of the detection cylinder (101) is open and is detachably connected to a cover plate (301). The pressure sensor (105) is fixedly installed on the cover plate (301).

4. A fracturing detection device for instrument gauges as defined in claim 3, wherein, The cover plate (301) is threaded to the lower end of the detection cylinder (101).

5. The apparatus of claim 1, wherein, It also includes solenoid valves, which are respectively installed on gas pipeline one (104) and gas pipeline two (504).

6. A fracturing detection device for instrument gauges as defined in claim 1, wherein, The outer wall of the connecting end of the instrument body (2) is threadedly connected to the inner wall of the output end of the connecting pipe (102).

7. The apparatus of claim 1, wherein, A receiving plate (4) is fixedly connected to the connecting pipe (102), a snap ring (401) is fixedly connected to the receiving plate (4), and a protective cover (402) is covered on the receiving plate (4). The outer diameter of the snap ring (401) and the inner diameter of the protective cover (402) are set to be the same.

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