Transmitter for single hole

Abstract

The utility model belongs to the field of fluid flow measurement, and particularly relates to a transmitter for a single hole. In order to enable a transmitter to be installed in a single-hole pipeline and monitor parameters of gas in a single hole, the utility model provides a transmitter for a single hole. The transmitter for the single hole comprises a base body, the base body is provided with an overflowing flow channel for gas to pass through, the base body is provided with a flow module, a carbon monoxide module and a methane module, each module is provided with a gas inlet flow channel for taking gas from the overflowing flow channel, each gas inlet flow channel is arranged on the base body, one part of each gas inlet flow channel forms a filtering cavity, and the other part of each gas inlet flow channel forms a gas outlet cavity. And a filtering structure for filtering gas in each gas inlet flow channel is detachably mounted in the filtering cavity. The filter structure is detachably mounted in the gas inlet flow channel, so that solid impurities in gas can be prevented from entering each module, and the single-hole transmitter can be mounted in a single-hole pipeline and detect gas parameters of a single drill hole.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of measuring the flow of fluid, especially relates to a single hole is with the transmitter. BACKGROUND

[0002] Article 47 of the "Prevention and Control of Coal and Gas Outburst Rules" (2019) provides that: "When pre-draining coal seam gas, the drainage time of each drill hole (i.e. single hole) should be recorded, and the concentration, flow rate, negative pressure, temperature, and carbon monoxide of the drill hole should be measured periodically".

[0003] A gas drainage parameter detector is disclosed in Chinese Utility Model Patent No. CN221280332U, authorized on July 5, 2024. The detector is a handheld detector, and the staff needs to hold the detector to each single hole for detection, wasting labor.

[0004] To solve the above problems, in the mine, the pipe network includes a main pipe and a single hole pipe respectively communicating with each single hole, each single hole pipe communicates with the main pipe, and a filter is installed on the main pipe. Since the gas flowing out of the single hole contains solid impurities, the conventional transmitter cannot be installed on the single hole pipe, but only on the main pipe. Therefore, it is not possible to simultaneously detect the parameters of the gas in all single holes using the conventional transmitter.

[0005] For example, Chinese Patent Application No. CN118361288A, published on July 19, 2024, discloses a monitoring device for coal mine extraction drilling, which includes a main line and several branches, each branch is connected to a single hole, and each branch is provided with a gas valve door to control the opening and closing of each branch. A sampling and detection unit is provided in the main line. At the same time, since the gas flowing out of the single hole contains solid impurities, a filter is provided in the sampling and detection unit to filter the gas, and the sampling and detection unit further includes a transmitter downstream of the filter. When detecting any single hole, only the corresponding gas valve door needs to be opened.

[0006] In the above monitoring device, since the transmitter is arranged downstream of the filter, and the filter is located in the main line, the transmitter cannot simultaneously monitor the parameters of the gas in all single holes, but only the parameters of the gas in any one single hole. UTILITY MODEL CONTENTS

[0007] The utility model aims to provide a single hole transmitter to solve the technical problem that the existing transmitter cannot be arranged in the single hole pipe.

[0008] To achieve the above purpose, the technical scheme of the single hole transmitter provided by the utility model is:

[0009] The single-hole transmitter comprises a base body, a through-flow channel for gas passing through the base body, a flow module for detecting gas flow, a carbon monoxide module for detecting carbon monoxide concentration and a methane module for detecting methane concentration, each of the modules is provided with an inlet channel for taking gas from the through-flow channel, each of the inlet channels is arranged on the base body, and a part of each of the inlet channels forms a filter cavity, and a filter structure for filtering gas in each of the inlet channels is detachably arranged in the filter cavity.

[0010] Further, the axial direction of the through-flow channel is defined as the up-down direction, a front cover for protecting the modules is arranged on the front end surface of the base body, the front cover is sealingly connected with the base body to form a protection cavity, and each of the modules is arranged in the protection cavity; the left side surface and / or the right side surface of the base body is provided with a mounting hole, the internal space of the mounting hole forms the filter cavity, and the filter structure is detachably arranged in the mounting hole and sealingly matched with the hole wall of the mounting hole to prevent gas from overflowing out of the base body from the mounting hole.

[0011] Further, at least a part of the filter structure comprises a mounting frame and a filter screen arranged on the mounting frame, the filter screen is used for filtering gas, the mounting frame is detachably arranged on the base body, and the mounting frame is sealingly matched with the hole wall of the mounting hole.

[0012] Further, at least a part of the filter structure comprises a filter core and a cover, the filter core is detachably arranged in the mounting hole, and the cover is located on the outside of the filter structure and sealingly matched with the hole wall of the mounting hole to prevent gas from overflowing out of the base body from the mounting hole.

[0013] Further, a sealing ring is arranged in the mounting hole and is pressed between the filter core and the hole wall of the mounting hole.

[0014] Further, the base body is further provided with an oxygen module for detecting oxygen concentration, and the oxygen module is also provided with the inlet channel and the filter structure.

[0015] Further, the flow module comprises a high-flow module for detecting high-flow-rate gas and a low-flow module for detecting low-flow-rate gas, and each of the high-flow module and the low-flow module is provided with a set of the inlet channel and the filter structure.

[0016] Further, the carbon monoxide module comprises a pressure sensor for detecting gas pressure.

[0017] Further, each of the inlet channels has an inlet port, and the angle between the direction of the inlet port and the flow direction of gas in the inlet channel is an acute angle.

[0018] Further, the left side and / or the right side of the base body is further provided with an equalizing mounting hole in communication with the protection cavity, and a waterproof air-permeable plug is mounted in the equalizing mounting hole for balancing the pressure in the protection cavity and the atmospheric pressure.

[0019] The single-hole transmitter has the advantages that: the single-hole transmitter is an opening invention; the filter structure is detachably mounted in the air inlet channel, so that solid impurities in the gas can be prevented from entering the modules, the single-hole transmitter can be installed in a single-hole pipeline, and the single-hole transmitter can be used to continuously monitor the gas parameters of a single borehole. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a front view of the single-hole transmitter of the utility model;

[0021] Figure 2 It is a left view of the single-hole transmitter of the utility model;

[0022] Figure 3 It is a right view of the single-hole transmitter of the utility model;

[0023] Figure 4 It is a structural schematic view of the sensor of the single-hole transmitter (the pressure sensor is built in the carbon monoxide module, so the pressure sensor is not shown in the figure);

[0024] Figure 5 It is an A-A view of the utility model; Figure 4

[0025] It is a B-B view of the utility model; Figure 6 Figure 5 It is a C-C view of the utility model;

[0026] Figure 7 Figure 4 It is a D-D view of the utility model;

[0027] Figure 8 It is an E-E view of the utility model; Figure 4

[0028] Figure 9 It is a left view schematic of the base body of the single-hole transmitter of the utility model; Figure 4

[0029] It is a front view schematic of the base body of the single-hole transmitter of the utility model; Figure 10

[0030] It is an E-E view of the utility model; Figure 11 Figure 10 It is a front view schematic of the base body of the single-hole transmitter of the utility model;

[0031] Figure 12 The single-hole transmitter has the advantages that: the single-hole transmitter is an opening invention; the filter structure is detachably mounted in the air inlet channel, so that solid impurities in the gas can be prevented from entering the modules, the single-hole transmitter can be installed in a single-hole pipeline, and the single-hole transmitter can be used to continuously monitor the gas parameters of a single borehole.​​​​

[0032] Figure 13 For Figure 12 F-F view;

[0033] Figure 14 The concentration filtering structure of the single-hole transmitter is shown in the figure.

[0034] Explanation of reference signs:

[0035] 1, base; 101, filter core mounting hole; 102, filter screen mounting hole; 103, nameplate; 104, pressure equalizing mounting hole; 2, cover; 3, waterproof breather plug; 4, concentration filtering structure; 401, filter screen; 402, mounting bracket; 5, first flow channel; 6, thicker section; 7, thinner section; 8, filter core; 9, sealing ring; 10, second flow channel; 11, high flow rate module; 12, low flow rate module; 13, carbon monoxide module; 14, methane module; 15, oxygen module; 16, temperature sensor; 17, carbon monoxide inlet flow channel; 18, methane inlet flow channel; 19, oxygen inlet flow channel; 20, front cover. DETAILED DESCRIPTION

[0036] To solve the problems in the background art, the core inventive concept of the present application is to filter the gas in the inlet flow channel, thereby avoiding damage to the modules by solid impurities, and enabling the single-hole transmitter to be installed in a single-hole pipeline.

[0037] The present application will be further described in detail below with reference to the embodiments.

[0038] The specific embodiment 1 of the single-hole transmitter provided by the present application is as follows:

[0039] As shown in Figures 1-14 , as the first basic specific embodiment, the single-hole transmitter includes a base 1 for installation in a single-hole pipeline, the base 1 is provided with an overflow flow channel for gas to pass through, and the base 1 is installed with a flow module for detecting the flow rate of the gas, a carbon monoxide module 13 for detecting the concentration of carbon monoxide, and a methane module 14 for detecting the concentration of methane, each module is provided with an inlet flow channel (i.e., a flow inlet flow channel, a carbon monoxide inlet flow channel 17, and a methane inlet flow channel 18) for taking gas from the overflow flow channel, each inlet flow channel is arranged on the base 1, and a part of each inlet flow channel constitutes a filtering cavity, and a filtering structure for filtering the gas in each inlet flow channel is detachably installed in the filtering cavity.

[0040] The single-hole transmitter further includes a temperature sensor 16 for measuring temperature and a pressure sensor for measuring gas pressure, so that the concentration, flow rate, negative pressure, temperature, and carbon monoxide parameters of the borehole can be monitored simultaneously by using one single-hole transmitter. The base 1 is also provided with a nameplate 103.

[0041] Preferably, in the first-type specific embodiment, the carbon monoxide module 13 includes a pressure sensor for detecting gas pressure, that is, the pressure sensor is built into the carbon monoxide module 13. In this case, there is no need to configure a separate air intake channel and filter structure for the pressure sensor, and the structure is simple.

[0042] In the first and second types of specific embodiments, the pressure sensor is configured with a separate air intake channel and flow passage structure.

[0043] Reference Figures 4-7 and Figures 10-13 As shown, taking the flow module as an example, the location of the filter chamber in this utility model is described:

[0044] In the first to third specific embodiments, the filter chamber is located in the middle part of the flow inlet channel. At this time, the filter chamber is connected to the flow channel through the first flow channel 5, and the filter chamber is connected to the flow module through the second flow channel 10. The first flow channel 5, the filter chamber and the second flow channel 10 together constitute the flow inlet channel.

[0045] In the first to fourth specific embodiments, the filter chamber is located at the beginning of the flow inlet channel, and the filter structure can be installed through the flow inlet channel.

[0046] In specific embodiments of types 1-5, the filter is located at the end of the flow inlet channel, and the gas flowing out from the filter structure directly enters the flow module.

[0047] Correspondingly, for each of the other modules, the filter chamber can be located at the beginning, middle or end of the corresponding air intake channel in the air intake channel configured for each module.

[0048] The filter structure is detachably installed in the inlet air passage, thereby preventing solid impurities in the gas from entering each module. This allows the single-hole transmitter to be installed in a single-hole pipeline, and thus enables continuous monitoring of gas parameters in a single borehole.

[0049] To facilitate the installation and disassembly of the filter structure, the following improvements have been made to the installation method of the filter structure in this utility model:

[0050] In actual single-hole pipes, the axial direction of the flow channel can be any direction, such as up and down, left and right, or front and back. For ease of understanding, in this utility model, the axial direction of the flow channel is defined as up and down.

[0051] Reference Figures 1-14As shown in the preferred second type of embodiment, a front cover 20 for protecting the modules is mounted on the front end face of the base 1, the front cover 20 is sealingly connected with the base 1 to form a protection cavity, and each module is mounted in the protection cavity; the left side face and / or the right side face of the base 1 is provided with mounting holes (specifically, filter core mounting holes 101 and filter screen mounting holes 102 in the figure), and the inner space of the mounting holes constitutes the filter cavity, and the filter structure is detachably mounted in the mounting holes and sealingly fitted with the hole wall of the mounting holes to avoid gas overflowing from the mounting holes to the outside of the base 1.

[0052] In the second-1 type of embodiment, the mounting holes are all located on the left side face of the base 1.

[0053] In the second-2 type of embodiment, the mounting holes are all located on the right side face of the base 1.

[0054] In the second-3 type of embodiment, part of the mounting holes are located on the left side face of the base 1, and the other part of the mounting holes are located on the right side face of the base 1, so that the length of the single-hole transmitter can be effectively shortened.

[0055] When the filter structure is replaced or cleaned, the front cover 20 does not need to be disassembled, and the filter structure can be only disassembled from the side face of the base 1 and mounted on the base 1.

[0056] Referring to Figures 1-14 As shown in the third type of embodiment, the mounting holes are located on the front end face of the base 1, and when the filter structure is replaced or cleaned, the front cover 20 needs to be disassembled.

[0057] In the fourth type of embodiment, the filter structure is a filter sponge or the like with elasticity, and a ring groove is arranged on the inner wall of the gas inlet channel, and a chamber surrounded by a section of the gas inlet channel corresponding to the ring groove constitutes the filter cavity. When the filter sponge is installed, the filter sponge is inserted into the gas inlet channel from the gas outlet of the gas inlet channel, and then the filter sponge is pushed into the filter cavity by using tweezers or the like. When the filter sponge reaches the filter cavity, the filter sponge is elastically reset, so that the filter sponge can be clamped in the ring groove.

[0058] When the filter sponge is replaced, the old filter sponge is directly torn by using tweezers or the like, and the new filter sponge is installed in the ring groove.

[0059] In the utility model, the essence that the filter structure is detachably mounted in the filter cavity is that the filter structure is detachably mounted in a flow channel, and in addition to the above mounting mode, the filter structure can be detachably mounted in the gas inlet channel by using any existing mode.

[0060] Referring to Figures 1-14As shown in the basis of the second type of embodiment, in order to facilitate the technical personnel in the art to understand the filtering structure, the utility model discloses the following three types of embodiments:

[0061] In the fifth type of embodiment, the filtering structure includes a mounting frame 402 and a filter screen 401 mounted on the mounting frame 402, the filter screen 401 is used for filtering gas, the mounting frame 402 is detachably mounted on the base body 1, and the mounting frame 402 is in sealing fit with the hole wall of the mounting hole, and the structure is simple.

[0062] It should be noted that a sealing ring can be arranged between the mounting frame 402 and the hole wall of the mounting hole, and the technical personnel in the art can also adopt other known modes to make the two components (i.e. the mounting frame 402 and the hole wall of the mounting hole) in sealing fit, and the sealing mode of the other two components in the utility model can also be referred to the above content, which will not be described herein.

[0063] In the sixth type of embodiment, the filtering structure includes a filter core 8 and a plug cap 2 detachably mounted in the mounting hole, the plug cap 2 is located on the outside of the filtering structure, and the plug cap 2 is in sealing fit with the hole wall of the mounting hole to avoid the overflow of gas from the mounting hole to the outside of the base body 1. Among them, the filter core 8 can be a filter sponge structure.

[0064] In the seventh type of embodiment, as shown, Figures 1-14 The filtering structure (i.e. the concentration filtering structure 4) corresponding to the module for detecting the concentration of gas is a filter screen 401 and a mounting frame 402, and the filtering structure (i.e. the flow filtering structure) corresponding to the module for detecting the flow of gas is a plug cap 2 and a filter core 8.

[0065] In the sixth and seventh types of embodiments, preferably, a sealing ring 9 is further arranged in the mounting hole, and the sealing ring 9 is pressed between the filter core 8 and the hole wall of the mounting hole, so that the gas can be better prevented from directly entering the corresponding module without being filtered. At this time, the filter core 8 can be a rigid filter core or an elastic filter core.

[0066] Of course, the sealing ring 9 can also not be arranged in the mounting hole, at this time, the filter core 8 is preferably an elastic filter core (such as a filter sponge), or the outer diameter of the filter core 8 is very close to the inner diameter of the mounting hole, so that the solid impurities cannot pass through the gap between the filter core 8 and the mounting hole.

[0067] On the basis of any one of the above-mentioned embodiments, preferably, in the eighth type of embodiment, the base body 1 is further provided with an oxygen module 15 for detecting the concentration of oxygen, and the oxygen module 15 is also provided with the gas inlet channel (i.e. the oxygen gas inlet channel 19) and the filtering structure, so that the parameter of the concentration of oxygen can be detected.

[0068] On the basis of any one of the above embodiments, preferably, in the ninth embodiment, the flow module comprises a high flow module 11 for detecting high flow rate gas and a low flow module 12 for detecting low flow rate gas, and the high flow module 11 and the low flow module 12 are each provided with a set of the gas inlet flow channel and the filter structure, so as to improve the upper and lower limits of flow measurement and the flow measurement accuracy of the single-hole transmitter.

[0069] Of course, according to actual needs, only one flow module can be selected. In the present application, the flow channel comprises a thick section 6 and a thin section 7, so as to change the pressure of the gas to measure the flow rate of the gas. Of course, the pressure of the gas can also be changed by means of setting a throttling insert in the flow channel, and the flow module is a prior art, which will not be described here.

[0070] Referring to Figures 8-11 In order to better avoid solid impurities from entering each module and prolong the interval length of cleaning or replacing the filter structure, in the tenth embodiment, each gas inlet flow channel has a gas inlet, and the angle between the direction of the gas inlet and the flow direction of the gas in the gas inlet flow channel is an acute angle. When the gas flows from top to bottom, the direction of the gas inlet is directed obliquely downward, and the solid impurities are not easy to enter the gas inlet under the action of inertia.

[0071] In the eleventh embodiment, the angle between the direction of the gas inlet and the flow direction of the gas in the gas inlet flow channel is a right angle or an obtuse angle. Compared with the tenth embodiment, the filter structure needs to be replaced or cleaned more frequently when the single-hole transmitter in the eleventh embodiment is used.

[0072] Referring to Figure 7 During the use of the single-hole transmitter, some gas inevitably leaks into the protection cavity. In order to better balance the pressure of the protection cavity and the outside, in the twelfth embodiment, the left side and / or the right side of the base body 1 is further provided with an equalizing mounting hole 104, the equalizing mounting hole 104 is in communication with the protection cavity, and a waterproof air permeable plug 3 for balancing the pressure in the protection cavity and the atmospheric pressure outside is mounted in the equalizing mounting hole 104.

[0073] In the twelfth-1 embodiment, the equalizing mounting hole 104 is located on the left side of the base body 1.

[0074] In the twelfth-2 embodiment, the equalizing mounting hole 104 is located on the right side of the base body 1.

[0075] In the twelfth-3 embodiment, the equalizing mounting hole 104 is located on the left side and the right side of the base body 1.

[0076] When the temperature sensor 16 is arranged in the protection cavity, the waterproof and air-permeable plug 3 can also make the temperature measured by the temperature sensor 16 more accurate.

[0077] Of course, in the 13th specific embodiment, the base 1 is not provided with the pressure equalizing mounting hole 104, the front cover 20 is made of a material with high strength, and the front cover 20 and the base 1 have high fastening force, so as to ensure the sealing of the protection cavity.

[0078] The specific embodiment 2 of the single-hole transmitter provided by the utility model is as follows:

[0079] The main difference between the embodiment and the specific embodiment 1 is that, in the embodiment, the single-hole transmitter does not include the temperature sensor 16 and the pressure sensor, and at this time, the temperature sensor 16 and the pressure sensor need to be additionally arranged in the single-hole pipeline.

[0080] It should be noted that, in the utility model, only the specific embodiments are classified according to specific structures, and this specific structure is not represented in other categories. For example, the structure of the 1st specific embodiment can be the same as that of the 2nd, 3rd or 4th specific embodiment.

[0081] Finally, it should be noted that the above is only the preferred embodiment of the utility model, and is not used to limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified without creative labor, or some technical features can be replaced, or different specific embodiments can be organically combined, so as to combine the attached drawings into the utility model. Figures 1-14 The specific embodiments given in the specification, of course, those skilled in the art can also combine the specific embodiments not given in the specification and drawings. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A transmitter for a single well, characterized in that The base body is provided with a flow channel for gas passing, and is provided with a flow module for detecting gas flow, a carbon monoxide module for detecting carbon monoxide concentration and a methane module for detecting methane concentration, each of which is provided with a gas inlet channel for taking gas from the flow channel, and each of the gas inlet channels is arranged on the base body and part of each of the gas inlet channels forms a filter cavity, and a filter structure for filtering gas in each of the gas inlet channels is detachably arranged in the filter cavity.

2. The single-hole transmitter of claim 1, wherein The axial direction of the flow channel is defined as the up-down direction, and a front cover for protecting the modules is arranged on the front end surface of the base body, and the front cover is sealingly connected with the base body to form a protection cavity, and each of the modules is arranged in the protection cavity; the left side surface and / or the right side surface of the base body is provided with a mounting hole, and the internal space of the mounting hole forms the filter cavity, and the filter structure is detachably arranged in the mounting hole, and the filter structure is sealingly connected with the hole wall of the mounting hole to prevent gas from overflowing out of the base body from the mounting hole.

3. The single hole transmitter of claim 2 wherein, At least part of the filter structure comprises a mounting frame and a filter screen arranged on the mounting frame, the filter screen is used for filtering gas, and the mounting frame is detachably arranged on the base body and sealingly connected with the hole wall of the mounting hole.

4. The single hole transmitter of claim 2 wherein, At least part of the filter structure comprises a filter core and a cover, which are detachably arranged in the mounting hole, and the cover is located outside the filter structure and sealingly connected with the hole wall of the mounting hole to prevent gas from overflowing out of the base body from the mounting hole.

5. The single hole transmitter of claim 4 wherein, A sealing ring is further arranged in the mounting hole and is pressed between the filter core and the hole wall of the mounting hole.

6. The single-hole transmitter of any one of claims 1 to 5, wherein, The base body is further provided with an oxygen module for detecting oxygen concentration, and the oxygen module is also provided with the gas inlet channel and the filter structure.

7. The single-hole transmitter of any one of claims 1-5, wherein, The flow module comprises a high flow rate module for detecting high flow rate gas and a low flow rate module for detecting low flow rate gas, and each of the high flow rate module and the low flow rate module is provided with a set of the gas inlet channel and the filter structure.

8. The single-hole transmitter of any one of claims 1-5, wherein, The carbon monoxide module comprises a pressure sensor for detecting gas pressure.

9. The single-hole transmitter of any one of claims 1-5, wherein, Each of the gas inlet channels has a gas inlet port, and the angle between the direction of the gas inlet port and the flow direction of gas in the gas inlet channel is an acute angle.

10. The single-hole transmitter of any one of claims 2-5, wherein, The left side surface and / or the right side surface of the base body is further provided with an equalizing mounting hole, which is in communication with the protection cavity and is provided with a waterproof air permeable plug for balancing the pressure in the protection cavity and the atmospheric pressure outside.

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