Base for multi-channel gas differential pressure collection and collection device

Abstract

The utility model discloses a multi-channel gas differential pressure acquisition base and an acquisition device, a plurality of groups of high-pressure side and low-pressure side gas inlets which are arranged in pairs are arranged on a base body, and all the high-pressure side gas inlets are communicated with a high-pressure gas inlet cavity arranged in the base body, or are communicated or closed with the high-pressure gas inlet cavity through a control valve; all the low-pressure side air inlets are communicated with a low-pressure air inlet cavity formed in the base body, or are communicated or closed with the low-pressure air inlet cavity through a control valve; control valves are arranged on each high-pressure side air inlet and each low-pressure side air inlet, and the control valves are connected with a control unit. The base for collection is provided with a plurality of groups of high-pressure side air inlets and low-pressure side air inlets, so that to-be-measured bodies of a plurality of pipelines can be respectively introduced at the same time, and gas in the plurality of pipelines can be measured by using one collection device; according to the collecting device, gas differential pressure parameters in a plurality of pipelines can be measured through one device, the cost of overall investment equipment of a system is reduced, and the maintenance workload is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring devices for measuring gas parameters, in particular to a base for collecting multi-channel gas differential pressures and a collecting device with the base. Background Art

[0002] For the gas in the pipeline, measuring devices are usually used to measure multiple parameters, such as flow rate, flow velocity, pressure (differential pressure), temperature, etc., such as the commonly used differential pressure transmitter.

[0003] In some use sites, such as extracting coal seam gas during underground construction of coal mines, due to the difference in coal seam distribution, in order to ensure the safety of coal mining, it is necessary to extract the gas from the coal seam. A large number of boreholes need to be drilled and pipes need to be buried for gas extraction. The number of buried pipes is huge. Depending on the size of the coal mine and the gas content, there may even be tens of thousands of buried pipes. In the existing technology, each pipeline is mostly equipped with a measuring device to measure the relevant parameters of the gas in the pipeline, or manual measurement is used. This measurement method has the following shortcomings: 1. Many measuring devices are required, which significantly increases the investment in related equipment and increases costs; 2. Each pipeline corresponds to a measuring device, and each measuring device requires operators to perform related operations, resulting in a large workload for on-site measurement operators and cumbersome work; 3. The installation and maintenance workload of each measuring device is significantly increased, and the failure rate is also increased accordingly; 4. The manual measurement method has a heavy workload, and the detection data is very easy to falsify. At the same time, the detection data is discontinuous and the change law of coal seam gas cannot be observed, which seriously threatens the safety of coal mining. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present utility model is to provide a multi-channel gas differential pressure collection base, so that the multi-channel gas differential pressure collection base can be used to introduce the gases in multiple pipelines into the base of the collection device respectively, and the same collection device can be used to measure the gases in multiple pipelines; the second purpose of the present utility model is to provide a multi-channel gas differential pressure collection device, so that the same collection device can be used to measure the gases in multiple pipelines, obtain parameters such as gas differential pressure, reduce costs, reduce maintenance workload, reduce the workload of personnel measurement, ensure the authenticity and continuity of monitoring data, and ensure the safety of coal mining.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A multi-channel gas differential pressure collection base, including a base body; characterized in that a plurality of groups of pressure inlets are arranged on the base body, each group of pressure inlets includes a high-pressure side air inlet and a low-pressure side air inlet arranged in pairs, all high-pressure side air inlets are connected to the high-pressure air inlet cavity arranged in the base body, or are connected or closed to the high-pressure air inlet cavity through the opening and closing action of the control valve; all low-pressure side air inlets are connected to the low-pressure air inlet cavity arranged in the base body, or are connected or closed to the low-pressure air inlet cavity through the opening and closing action of the control valve; a control valve is arranged on each high-pressure side air inlet and each low-pressure side air inlet, and the control valve is connected to the control unit. In this way, the multi-channel gas differential pressure collection base of the utility model has multiple groups of high-pressure side and low-pressure side air inlets, which can simultaneously introduce the gases to be measured from multiple pipelines, respectively, and lay the foundation for a collection device to measure the gases in multiple pipelines.

[0007] Furthermore, one end of the high-pressure air inlet cavity is connected to the differential pressure sensor through a high-pressure drainage pipe, and the gas is passed into the differential pressure sensor; one end of the low-pressure air inlet cavity is connected to the differential pressure sensor through a low-pressure drainage pipe, and the gas is passed into the differential pressure sensor. This is conducive to the differential pressure sensor to collect gas parameters on the high-pressure side and low-pressure side of the pipeline respectively.

[0008] Further, a pressure-inducing joint is provided on each high-pressure side air inlet and the low-pressure side air inlet. In this way, the pressure-inducing joint can adopt a quick-insert joint to quickly connect the pressure-inducing pipe.

[0009] Furthermore, the relevant parameters of the gas in the pipeline collected by the differential pressure sensor are input into the control unit, and the gas parameters are obtained through processing and calculation by a preset program in the control unit.

[0010] Furthermore, a high-pressure side air inlet and a low-pressure side air inlet arranged in a pair have their control valves opened or closed at the same time.

[0011] A multi-channel gas differential pressure acquisition device includes a box body, characterized in that: a plurality of pressure-inducing holes are arranged on the box body, and the pressure-inducing holes correspond to the high-pressure side air inlet and the low-pressure side air inlet on the base body one by one; the base body, the control valve, the differential pressure sensor, and the control unit are arranged inside the box body, or outside the box body; all the high-pressure side air inlets are connected or closed with the high-pressure air inlet cavity arranged in the base body through the opening and closing action of the control valve; all the low-pressure side air inlets are connected or closed with the low-pressure air inlet cavity arranged in the base body through the opening and closing action of the control valve; a control valve is arranged on each high-pressure side air inlet and each low-pressure side air inlet, and the control valve is connected to the control unit; one end of the high-pressure air inlet cavity is connected to the differential pressure sensor through a high-pressure drainage pipe, and the gas is passed into the differential pressure sensor; one end of the low-pressure air inlet cavity is connected to the differential pressure sensor through a low-pressure drainage pipe, and the gas is passed into the differential pressure sensor.

[0012] Further: a pressure-inducing joint is provided on each high-pressure side air inlet and the low-pressure side air inlet, and each pressure-inducing joint is inserted into a corresponding pressure-inducing hole and protrudes out of the box. In this way, the pressure-inducing joint protruding out of the box facilitates the quick connection of the sampling hose.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] 1. The multi-channel gas differential pressure collection base of the utility model has multiple sets of high-pressure side and low-pressure side air inlets, which can simultaneously introduce the gases to be measured from multiple pipelines, laying the foundation for one collection device to measure the gas differential pressure in multiple pipelines.

[0015] 2. Under the action of the control device, each set of high-pressure side and low-pressure side air inlets are connected to the high-pressure air inlet cavity and the low-pressure air inlet cavity inside the base respectively, and the gas pressure in the pipeline is respectively passed into the sensor to obtain the required gas differential pressure and other parameters.

[0016] 3. The collection device of the utility model can measure the gas differential pressure parameters in multiple pipelines with one device, thus reducing the overall equipment cost of the system.

[0017] 4. The collection device of the utility model can measure the gas differential pressure parameters in multiple pipelines with one device, which greatly reduces the number of devices, reduces the workload of on-site operators during measurement, and reduces the maintenance workload. At the same time, it ensures the authenticity and continuity of the monitoring data, provides reliable data support for coal seam gas content trend analysis, provides effective technical support for safe mining of coal mines, and effectively helps enterprises achieve the goal of reducing staff and increasing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of a base for multi-channel gas differential pressure collection of the utility model;

[0019] Figure 2 for Figure 1 A top view of

[0020] Figure 3 This is a schematic diagram of the structure of the collection device of the utility model;

[0021] Figure 4 yes Figure 3 Section view along A-A.

[0022] In the figure: 1—base body, 2—pressure inlet, 3—high-pressure side air inlet, 4—low-pressure side air inlet, 5—high-pressure air inlet cavity, 6—low-pressure air inlet cavity, 7—control valve, 8—high-pressure drainage pipe, 9—differential pressure sensor, 10—control unit, 11—pressure inlet joint, 20—box, 21—pressure inlet hole. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. The components of the embodiment of the utility model generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents the selected embodiment of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0024] It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In the description of the utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "back" and the like is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invention product is usually placed when used, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Example:

[0026] This example: See Figure 1 , 23. A multi-channel gas differential pressure collection base, comprising a base body 1, the shape of the base body 1 is in accordance with the process requirements, and the figure shows a rectangular structure; a plurality of groups of pressure inlet ports 2 are arranged on the base body 1, each group of pressure inlet ports 2 includes a high-pressure side air inlet port 3 and a low-pressure side air inlet port 4 arranged in pairs, all high-pressure side air inlet ports 3 are connected to the high-pressure air inlet cavity 5 arranged in the base body 1, or are connected or closed to the high-pressure side air inlet port 3 through the opening and closing action of a control valve 7; all low-pressure side air inlet ports 4 are connected to the low-pressure air inlet cavity 6 arranged in the base body 1, or are connected or closed to the low-pressure air inlet cavity 6 through the opening and closing action of the control valve 7; the control valve 7 is arranged on each high-pressure side air inlet port 3 and each low-pressure side air inlet port 4, the control valve 7 is connected to the control unit 10, and is opened under the action of a control signal output by the control unit 10, so that the high-pressure side air inlet port 3 is connected to the high-pressure air inlet cavity 5, or the low-pressure side air inlet port 4 is connected to the low-pressure air inlet cavity 6. A high-pressure side air inlet 3 and a low-pressure side air inlet 4 are arranged in pairs, and their control valves 7 are opened or closed at the same time. The control valve 7 can use the solenoid valve of the prior art, which is simple and reliable. The pressure inlet 2 shown in the figure is ten groups, corresponding to ten pipelines respectively, and can collect gas parameters in ten pipelines; more than 10 pressure inlet ports 2 can be set as needed to connect more pipelines.

[0027] One end of the high-pressure air inlet chamber 5 is connected to the differential pressure sensor 9 through a high-pressure drainage pipe 8, and the gas is passed into the differential pressure sensor 9 to obtain the required gas pressure and other parameters; one end of the low-pressure air inlet chamber 6 is connected to the differential pressure sensor 9 through a low-pressure drainage pipe, and the gas is passed into the differential pressure sensor 9 to obtain the required gas pressure and other parameters.

[0028] In order to conveniently and quickly connect the pressure-inducing hose or pressure-inducing capillary of the pipeline, a pressure-inducing joint 11 is provided on each high-pressure side air inlet 3 and low-pressure side air inlet 4. The pressure-inducing joint 11 can be a quick-insert or quick-release joint to quickly connect the pressure-inducing hose to the high-pressure side air inlet 3 and the low-pressure side air inlet 4.

[0029] When in use, through a group of pressure inlet ports 2, the high-pressure end and low-pressure end of the gas to be measured of a pipeline are respectively connected to the high-pressure side air inlet 3 and the low-pressure side air inlet 4 through a pressure inlet hose (or a pressure inlet capillary), and the high-pressure end and low-pressure end gas of the pipeline are respectively introduced into the pressure inlet port 2; under the control signal output by the control unit 10, the control valve 7 is opened, and the high-pressure side air inlet 3 and the low-pressure side air inlet 4 of the group are opened at the same time, and the gas of the pipeline is respectively passed into the high-pressure air inlet cavity 5 and the low-pressure air inlet cavity 6, and then enters the differential pressure sensor 9 through the drainage pipe 8 to obtain the required gas pressure and other parameters. After obtaining the relevant parameters of the gas of the pipeline, the control valve 7 of the pipeline is closed by the control signal output by the control unit 10, and then the control valve 7 corresponding to the next pipeline is opened to measure the relevant parameters of the gas of the next pipeline; in this cycle, using a collection device of the utility model, the relevant parameters of the gas of multiple pipelines can be measured, which greatly reduces the number of equipment, reduces the cost of equipment, can also improve the measurement accuracy, and reduces the maintenance workload.

[0030] The multi-channel gas differential pressure collection device of the utility model comprises a box body 20, a base body 1 is arranged in the box body 20, a plurality of pressure-inducing holes 21 are arranged on the box body 20, the number of the pressure-inducing holes 21 is not less than the number of the pressure-inducing ports 2, the pressure-inducing holes 21 correspond one-to-one with the high-pressure side air inlet 3 and the low-pressure side air inlet 4 on the base body 1, and after the pressure-inducing joints 11 are arranged, each pressure-inducing joint 11 is inserted into a corresponding pressure-inducing hole 21, protruding out of the box body 20, to form a joint that is convenient for connection. The base body 1, the control valve 7, the differential pressure sensor 9, and the control unit 10 are arranged inside the box body 20 or outside the box body 20 to form a collection device to collect relevant parameters of the gas in the pipeline, and obtain the differential pressure value of the gas and other parameters that need to be collected after processing and calculation; all high-pressure side air inlets 3 are connected or closed with the high-pressure air inlet cavity 5 set in the base body 1 through the opening and closing action of the control valve 7; all low-pressure side air inlets 4 are connected or closed with the low-pressure air inlet cavity 6 set in the base body 1 through the opening and closing action of the control valve 7; a control valve 7 is set on each high-pressure side air inlet 3 and each low-pressure side air inlet 4, and the control valve 7 is connected to the control unit 10.

[0031] One end of the high-pressure air inlet chamber 5 is connected to the differential pressure sensor 9 through a high-pressure drainage pipe 8, and the gas is passed into the differential pressure sensor 9; one end of the low-pressure air inlet chamber 6 is connected to the differential pressure sensor 9 through a low-pressure drainage pipe, and the gas is passed into the differential pressure sensor 9.

[0032] The base body 1, the control valve 7, the differential pressure sensor 9, and the control unit 10 are directly or indirectly connected to and fixed to the box body 20. The relevant parameters of the gas in the pipeline collected by the differential pressure sensor 9 can be input into the control unit 10, and the parameters to be collected such as the differential pressure value of the gas can be obtained through processing and calculation by the preset program in the control unit 10.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit the technical solution. Ordinary technicians in this field should understand that those modifications or equivalent replacements of the technical solution of the utility model without departing from the purpose and scope of the technical solution of the utility model should be included in the scope of the claims of the utility model.

Claims

1. A base for collecting multi-channel gas differential pressure, comprising a base body (1); characterized in that: A plurality of groups of pressure inlet ports (2) are arranged on the base body (1), each group of pressure inlet ports (2) comprising a high-pressure side air inlet port (3) and a low-pressure side air inlet port (4) arranged in pairs, all of the high-pressure side air inlet ports (3) are connected to a high-pressure air inlet cavity (5) arranged in the base body (1), or are connected to or closed by the opening and closing action of a control valve (7); all of the low-pressure side air inlet ports (4) are connected to a low-pressure air inlet cavity (6) arranged in the base body (1), or are connected to or closed by the opening and closing action of a control valve (7); a control valve (7) is arranged on each of the high-pressure side air inlet ports (3) and each of the low-pressure side air inlet ports (4), and the control valve (7) is connected to a control unit (10).

2. The multi-channel gas differential pressure collection base according to claim 1, characterized in that: One end of the high-pressure air inlet chamber (5) is connected to the differential pressure sensor (9) via a high-pressure drainage pipe (8), so that gas is passed into the differential pressure sensor (9); one end of the low-pressure air inlet chamber (6) is connected to the differential pressure sensor (9) via a low-pressure drainage pipe, so that gas is passed into the differential pressure sensor (9).

3. The multi-channel gas differential pressure collection base according to claim 2, characterized in that: A pressure-leading joint (11) is provided on each high-pressure side air inlet (3) and each low-pressure side air inlet (4).

4. The multi-channel gas differential pressure collection base according to claim 2 or 3, characterized in that: The relevant parameters of the gas in the pipeline collected by the differential pressure sensor (9) are input into the control unit (10), and the gas parameters are obtained through processing and calculation by a preset program in the control unit (10).

5. The multi-channel gas differential pressure collection base according to any one of claims 1 to 3, characterized in that: A high-pressure side air inlet (3) and a low-pressure side air inlet (4) are arranged in pair, and their control valves (7) are opened or closed at the same time.

6. A multi-channel gas differential pressure collection device, comprising a box (20), characterized in that: A plurality of pressure-inducing holes (21) are provided on the box body (20), and the pressure-inducing holes (21) correspond one-to-one to the high-pressure side air inlet (3) and the low-pressure side air inlet (4) on the base body (1) according to any one of claims 1 to 5; the base body (1), the control valve (7), the differential pressure sensor (9), and the control unit (10) are arranged inside the box body (20) or outside the box body (20); All high-pressure side air inlets (3) are connected or closed to a high-pressure air inlet cavity (5) provided in the base body (1) through the opening and closing action of a control valve (7); all low-pressure side air inlets (4) are connected to a low-pressure air inlet cavity (6) provided in the base body (1), or are connected or closed through the opening and closing action of a control valve (7); a control valve (7) is provided on each high-pressure side air inlet (3) and each low-pressure side air inlet (4), and the control valve (7) is connected to a control unit (10); One end of the high-pressure air inlet chamber (5) is connected to the differential pressure sensor (9) via a high-pressure drainage pipe (8), so that gas is passed into the differential pressure sensor (9); one end of the low-pressure air inlet chamber (6) is connected to the differential pressure sensor (9) via a low-pressure drainage pipe, so that gas is passed into the differential pressure sensor (9).

7. The multi-channel gas differential pressure acquisition device according to claim 6, characterized in that: A pressure-introducing joint (11) is provided on each high-pressure-side air inlet (3) and each low-pressure-side air inlet (4), and each pressure-introducing joint (11) is inserted into a corresponding pressure-introducing hole (21) and protrudes out of the box body (20).

8. The multi-channel gas differential pressure acquisition device according to claim 6 or 7, characterized in that: The relevant parameters of the gas in the pipeline collected by the differential pressure sensor (9) are input into the control unit (10), and are processed and calculated by a preset program in the control unit (10) to obtain the parameters of the gas.

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