A gas detector chamber suitable for oil and gas recovery pipeline

Abstract

The utility model discloses a gas detector air chamber suitable for an oil and gas recovery pipeline. The gas detector equipment aims to solve the technical problem that the prior art cannot meet the environmental requirements of oil and gas recovery detection due to its material and structure. The utility model comprises a main body, the top of the main body is fixedly connected with a surface cavity connection part, the bottom of the main body is fixedly connected with a pipeline connection part, and the lower end of the pipeline connection part is provided with four convection holes distributed in a ring array. The utility model adopts 304 stainless steel material as a whole to solve the problem that the traditional gas chamber is not corrosion-resistant. The threads and tool grooves on the surface cavity connection part and the pipeline connection part can solve the problem that the traditional gas chamber cannot be directly installed on the pipeline. The four convection holes at the lower end of the pipeline connection part can solve the problems of poor gas convection, large detection error and slow response of the traditional gas chamber. The filter can effectively reduce the pollution degree of the sensor and improve the service life of the sensor.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas detectors, and in particular relates to a gas detector chamber suitable for an oil and gas recovery pipeline. Background Art

[0002] Oil and gas recovery refers to the collection of volatile gasoline vapors during the process of loading and unloading gasoline and refueling vehicles, and the conversion of the oil and gas from gas to liquid and back into gasoline through one or both of the following processes: absorption, adsorption or condensation, so as to achieve the purpose of recycling. The use of oil and gas recovery technology to recover the oil and gas emitted during the storage, transportation and loading and unloading of oil products can prevent air pollution caused by oil and gas volatilization, eliminate safety hazards, and reduce economic losses by improving energy utilization, thereby obtaining considerable benefits in return.

[0003] In order to ensure the normal operation of the oil and gas recovery system, it is necessary to conduct real-time online monitoring of the gas concentration in the recovery pipeline; due to the characteristics of the oil and gas recovery pipeline, there are special requirements for gas detection instruments, such as explosion-proof, corrosion-resistant, easy to install, fast gas convection, etc. As an important component of the gas detector, the gas chamber also needs to be improved accordingly to meet the requirements.

[0004] The gas chamber of the traditional gas detector is made of die-cast aluminum (such as Figure 1 ), cannot cope with the corrosion caused by the oil and gas recovery environment; the exterior is smooth and cannot be installed on the pipeline; there is only one air inlet, and the gas convection is slow, which will not only cause large errors in the detection results and slow response, but also cause sensor pollution over a long period of time, which will damage the service life of the sensor; the traditional gas chamber cannot meet the environmental requirements of oil and gas recovery detection due to its material and structure, so it is not suitable for use on oil and gas recovery pipelines. Therefore, a gas detector gas chamber suitable for oil and gas recovery pipelines is designed to change the above technical defects. Utility Model Content

[0005] (1) Technical issues to be solved

[0006] In view of the shortcomings of the prior art, the purpose of the present utility model is to provide a gas detector air chamber suitable for oil and gas recovery pipelines. The gas detector equipment aims to solve the technical problem that the prior art cannot meet the environmental requirements of oil and gas recovery detection due to its material and structure.

[0007] (2) Technical solution

[0008] In order to solve the above technical problems, the utility model provides a gas detector air chamber suitable for an oil and gas recovery pipeline, comprising a main body, the top end of the main body is fixedly connected to a surface cavity connecting part, the bottom end of the main body is fixedly connected to a pipe connecting part, the lower end of the pipe connecting part is provided with four convection holes distributed in a circular array, the bottom end of the pipe connecting part is internally threadedly connected to a filter screen, and the bottom end of the pipe connecting part is internally threadedly connected to a gasket below the filter screen.

[0009] Preferably, the main body, the surface cavity connecting part and the pipeline connecting part are an integrated structure and are made of stainless steel.

[0010] Furthermore, an air chamber cavity is provided inside the main body, and a through hole communicating with the air chamber cavity is provided in the middle of the surface cavity connecting portion.

[0011] Furthermore, tool grooves are provided on both left and right sides of the upper end of the main body, and the two tool grooves are symmetrically arranged about the central axis of the main body.

[0012] Furthermore, the outer sides of the surface cavity connection part and the outer sides of the pipe connection part are both provided with external threads, the bottom end of the air chamber cavity is provided with an annular mounting groove, and the inner wall of the annular mounting groove is provided with internal threads compatible with the filter screen and the gasket.

[0013] Furthermore, the filter screen is located below the convection holes, and the lower surface of the filter screen is in contact with the upper surface of the gasket.

[0014] (3) Beneficial effects

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The overall use of 304 stainless steel solves the problem of non-corrosion resistance of traditional gas chambers;

[0017] 2. The threads and tool grooves on the surface cavity connection part and the pipe connection part can solve the problem that the traditional gas chamber cannot be directly installed on the pipe;

[0018] 3. The four convection holes at the lower end of the pipe connection can solve the problems of poor gas convection, large detection error and slow response in traditional gas chambers;

[0019] 4. The filter can effectively reduce the degree of sensor pollution and increase the service life of the sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the gas chamber of a traditional gas detector;

[0021] Figure 2 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the three-dimensional structure of the utility model from another perspective;

[0023] Figure 4 This is a schematic diagram of the main structure of the utility model;

[0024] Figure 5 It is a schematic diagram of the main cross-sectional structure of the utility model.

[0025] The markings in the accompanying drawings are: 1. main body; 2. surface cavity connection part; 3. tool groove; 4. pipe connection part; 5. convection hole; 6. filter screen; 7. gasket; 8. air chamber cavity; 9. through hole. DETAILED DESCRIPTION

[0026] This specific implementation is a gas detector chamber suitable for oil and gas recovery pipelines, and its structural schematic diagram is shown in FIG. Figure 2-Figure 5 As shown, it includes a main body 1, the top of the main body 1 is fixedly connected to a surface cavity connecting part 2, the bottom of the main body 1 is fixedly connected to a pipe connecting part 4, the lower end of the pipe connecting part 4 is provided with four convection holes 5 distributed in a circular array, the bottom of the pipe connecting part 4 is internally threadedly connected to a filter screen 6, and the bottom of the pipe connecting part 4 is internally threadedly connected to a gasket 7 located below the filter screen 6.

[0027] Among them, the main body 1, the surface cavity connection part 2 and the pipeline connection part 4 are an integrated structure and are made of 304 stainless steel; 304 stainless steel can solve the problem that the traditional gas chamber is not corrosion-resistant.

[0028] An air chamber cavity 8 is provided inside the main body 1 , and a through hole 9 communicating with the air chamber cavity 8 is provided in the middle of the surface cavity connecting part 2 .

[0029] Among them, tool grooves 3 are opened on both sides of the upper end of the main body 1, and the two tool grooves 3 are symmetrically arranged about the central axis of the main body 1; the tool grooves 3 can solve the problem that the traditional air chamber cannot be directly installed on the pipeline.

[0030] Among them, the outer side of the meter cavity connection part 2 and the outer side of the pipe connection part 4 are both provided with external threads. The gas chamber of the gas detector is used for outlet wires and connecting instruments through the meter cavity connection part 2 and the through hole 9. The external thread on the pipe connection part 4 is installed on the pipe. An annular mounting groove is provided at the bottom end of the air chamber cavity 8. The inner wall of the annular mounting groove is provided with an internal thread compatible with the filter screen 6 and the gasket 7, which facilitates the disassembly and installation of the filter screen 6.

[0031] The filter screen 6 is located below the convection holes 5 , and the lower surface of the filter screen 6 is in contact with the upper surface of the gasket 7 ; this ensures the reliability of the installation of the filter screen 6 .

[0032] Working principle: the gas chamber of the gas detector is installed on the pipeline through the external thread on the pipeline connecting part 4. After the gas chamber of the gas detector is installed on the pipeline, the four convection holes 5 and the filter 6 at the bottom are just exposed to the inside of the pipeline. When gas flows through the pipeline, no matter which direction the gas flows from, it can effectively enter the inside through the convection holes 5. After the gas is detected by the sensor, it can flow away through the convection holes 5 or the filter 6 in time. This ensures fast gas convection, faster instrument detection response and smaller error. In addition to ventilation, the filter 6 also has the function of filtering out impurities, which can effectively reduce the degree of sensor pollution and increase the service life of the sensor.

[0033] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. A gas detector chamber suitable for an oil and gas recovery pipeline, characterized in that: The invention comprises a main body (1), the top end of the main body (1) is fixedly connected to a surface cavity connection part (2), the bottom end of the main body (1) is fixedly connected to a pipe connection part (4), the lower end of the pipe connection part (4) is provided with four convection holes (5) distributed in a ring array, the bottom end of the pipe connection part (4) is internally threadedly connected to a filter screen (6), and the bottom end of the pipe connection part (4) is internally threadedly connected to a gasket (7) located below the filter screen (6).

2. The gas detector chamber suitable for oil and gas recovery pipeline according to claim 1, characterized in that: The main body (1), the surface cavity connecting part (2) and the pipeline connecting part (4) are an integrated structure and are made of 304 stainless steel.

3. The gas detector chamber suitable for oil and gas recovery pipeline according to claim 1, characterized in that: An air chamber cavity (8) is provided inside the main body (1), and a through hole (9) communicating with the air chamber cavity (8) is provided in the middle of the surface cavity connecting portion (2).

4. The gas detector chamber suitable for oil and gas recovery pipeline according to claim 1, characterized in that: Tool grooves (3) are provided on both left and right sides of the upper end of the main body (1), and the two tool grooves (3) are symmetrically arranged with respect to the central axis of the main body (1).

5. The gas detector chamber suitable for oil and gas recovery pipeline according to claim 1, characterized in that: The outer sides of the surface cavity connection part (2) and the outer sides of the pipe connection part (4) are both provided with external threads, the bottom end of the air chamber cavity (8) is provided with an annular mounting groove, and the inner wall of the annular mounting groove is provided with internal threads that are compatible with the filter screen (6) and the gasket (7).

6. The gas detector chamber suitable for oil and gas recovery pipeline according to claim 1, characterized in that: The filter screen (6) is located below the convection hole (5), and the lower surface of the filter screen (6) is in contact with the upper surface of the gasket (7).

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