A granary grain condition measurement and control system in-warehouse wiring structure

Abstract

The utility model relates to a kind of grain condition measurement and control system in-store wiring structure for granary, including granary and the center tube being set in the middle part of granary, the top of center tube is communicated with grain inlet, the bottom of center tube is communicated with grain outlet, the lateral wall of center tube is equipped with multiple over-grain ports of communicating granary;It also includes center measuring tube, peripheral measuring tube and temperature measuring cable;The lateral wall of center tube is fixed with multiple center measuring tubes being spaced apart along its circumferential direction;The lateral wall of center measuring tube is spaced apart along its axial direction and is equipped with several first communication ports of communicating the inside of granary;Peripheral measuring tube is fixed at the bottom of granary, and the lateral wall of peripheral measuring tube is equipped with several second communication ports of communicating the inside of granary;Temperature measuring cable is arranged in center measuring tube and peripheral measuring tube. It can effectively avoid the problem that grain flow directly impacts, rubs or entangles temperature measuring cable during grain discharging process, and ensures the reliability of temperature measuring wiring.

Description

Technical Field

[0001] This utility model relates to the field of grain storage monitoring and control technology, specifically to an internal wiring structure for a grain storage monitoring and control system. Background Technology

[0002] Grain condition monitoring and control systems are the technical foundation for scientific grain storage and improved warehouse management. They serve as real-time observers of the status of stored grain, and their accuracy and reliability are directly related to the safety of grain storage.

[0003] Currently, temperature-sensing cables are widely used in various storage facilities to achieve real-time monitoring of grain storage conditions in grain warehouses. A typical temperature-sensing cable consists of a temperature sensor, a core wire, tensile steel wire, and an outer sheath. Several temperature sensors are installed on the core wire at standard intervals. The core wire is encased in an outer sheath, which contains tensile steel wire to enhance its tensile strength. By deploying temperature-sensing cables at different locations, stratified temperature data can be collected vertically at different locations within the grain pile. Combined with data acquisition equipment and remote monitoring systems, this effectively determines whether the grain exhibits abnormal conditions such as mold or overheating, making it a key component in modern automated grain condition monitoring systems.

[0004] When installing temperature measuring cables in existing grain silos, the cables are usually suspended vertically in the grain pile from the top. For example, patent number CN 119511884 A describes a grain silo monitoring system and method, in which multiple temperature detection devices are deployed in the horizontal direction at the top of the grain silo, and the temperature detection devices extend downward to the bottom of the grain silo.

[0005] However, during the process of releasing grain at the bottom of the grain silo, the grain in the grain pile will form a high-speed grain flow towards the grain outlet, which will frequently impact and rub against the temperature measuring cable. This can easily cause the temperature measuring cable to shake, be pulled, or even deform. In severe cases, it may cause the internal conductor of the temperature measuring cable to break or the temperature measuring element to be damaged, thereby affecting the temperature measurement accuracy and equipment life.

[0006] Therefore, it is necessary to study the wiring structure inside a grain warehouse for a grain condition monitoring and control system. Utility Model Content

[0007] Therefore, the purpose of this utility model is to provide a wiring structure for a grain condition monitoring and control system in a grain warehouse, which can effectively solve the problem that the grain flow will impact and damage the temperature measuring cables laid in the grain warehouse during grain release.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] A grain condition monitoring and control system for grain storage includes a grain storage and a central pipe located in the middle of the grain storage. The top of the central pipe is connected to the grain inlet, the bottom of the central pipe is connected to the grain outlet, and the side wall of the central pipe has multiple grain passages connecting to the grain storage.

[0010] Its features include: a central measuring tube, peripheral measuring tubes, and a temperature measuring cable;

[0011] Multiple central measuring tubes are fixedly arranged on the side wall of the central tube at intervals along its circumference; the side wall of the central measuring tube is provided with a number of first connecting ports that connect to the inside of the grain silo at intervals along its axial direction.

[0012] The peripheral measuring tubes are fixed to the bottom of the grain silo in a uniform circle around the central tube. The sidewalls of the peripheral measuring tubes are provided with several second connecting ports that connect to the inside of the grain silo along their axial direction.

[0013] Temperature measuring cables are vertically threaded inside both the central measuring tube and the peripheral measuring tubes.

[0014] Furthermore, the second connecting ports are all oriented towards the direction of the central tube.

[0015] Furthermore, multiple limiting clamps are spaced apart along the axial direction inside the peripheral measuring tube to limit the temperature measuring cable in the middle of the peripheral measuring tube; each limiting clamp is distributed directly opposite a second communication port.

[0016] Furthermore, the limiting clamp includes a fixing rod, a limiting seat, and a limiting cover plate;

[0017] One end of the fixing rod is fixedly connected to the side wall of the peripheral measuring tube away from its second communication port, and the other end of the fixing rod is fixedly connected to the limiting seat, which has a limiting through groove facing the opening of the second communication port.

[0018] The limiting cover plate can be detachably installed on the opening of the limiting through groove to form a limiting space for the temperature measuring cable to pass through and be limited.

[0019] Furthermore, a gas sensor array is provided on the side of the limiting cover facing the second communication port.

[0020] Furthermore, it also includes a top connecting frame, which is fixed to the top of the grain silo and located above the grain loading line. The tops of the central measuring tube and the peripheral measuring tube are both fixedly connected to the top connecting frame.

[0021] Furthermore, a number of hooks are fixedly connected to the lower surface of the top connecting frame, with each hook corresponding to a peripheral measuring tube; a sling is fixedly connected to the top of the temperature measuring cable, and the sling is hooked to the hook.

[0022] The beneficial effects of the above technical solution are:

[0023] (1) This utility model has multiple central measuring tubes arranged around the central tube and multiple peripheral measuring tubes arranged at the bottom of the grain silo. Both the central and peripheral measuring tubes have openings for grain flow. The temperature measuring cable is vertically run through the central and peripheral measuring tubes and stably wired in the measuring tubes, thereby realizing real-time monitoring of the temperature of the grain pile in different areas. Since the temperature measuring cable is not directly exposed in the grain pile in the grain silo, but is laid in a relatively closed measuring tube, when the grain falls and flows through the central tube and its grain outlet, the temperature measuring cable is sealed in an independent measuring tube, which can effectively avoid the problem of direct impact, friction or entanglement of the temperature measuring cable by the grain flow during the grain discharge process. The structure ensures the reliability of the temperature measuring wiring, improves the stability of the measurement and control system and the service life of the temperature measuring cable.

[0024] (2) The limiting clamp set in the peripheral measuring tube of this utility model can guide and limit the temperature measuring cable in segments, thereby realizing the stable spatial positioning of the cable in the measuring tube cavity, so that the temperature measuring cable can be stably suspended in the central axis area of ​​the measuring tube, avoiding the temperature measuring cable from sticking to the side wall or swinging freely in the cavity, preventing the temperature of the peripheral measuring tube from affecting the measurement of the temperature measuring cable, and preventing the cable from being entangled, collided, or knotted due to airflow disturbance or vibration caused by grain flowing at the connecting port. Attached Figure Description

[0025] Figure 1 This is a front sectional view of the present invention;

[0026] Figure 2 A top view of the arrangement of the measuring tubes;

[0027] Figure 3 This is a top view of the top connecting frame;

[0028] Figure 4 This is a top cross-sectional view of the central tube and the central measuring tube;

[0029] Figure 5 Diagram of the top connection nodes of the surrounding measuring tubes;

[0030] Figure 6 This is a top view of the surrounding measuring tubes and limiting clamps.

[0031] Reference numerals in the attached drawings: 1. Grain bin; 2. Central tube; 3. Central measuring tube; 4. Peripheral measuring tube; 5. Temperature measuring cable; 6. Limiting clamp; 7. Gas sensor assembly; 8. Top connecting frame; 9. Hook; 101. Grain inlet; 102. Grain outlet; 201. Grain passage; 301. First connecting port; 401. Second connecting port; 501. Sling; 601. Fixing rod; 602. Limiting seat; 603. Limiting cover plate; 604. Limiting through groove. Detailed Implementation

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0033] This embodiment aims to provide a wiring structure for a grain condition monitoring and control system inside a grain warehouse. It is mainly used for the wiring of temperature measuring cables in the grain condition monitoring and control system, addressing the problem that the grain flow during grain release can cause impact and damage to the temperature measuring cables laid in the grain warehouse.

[0034] A wiring structure for a grain condition monitoring and control system inside a grain warehouse, such as... Figure 1 It includes a grain silo 1 and a central pipe 2 located in the middle of the grain silo 1, as well as a central measuring pipe 3, a peripheral measuring pipe 4 and a temperature measuring cable 5.

[0035] Grain bin 1 is a shallow cylindrical bin, including a bin body and a bin top. The bin body is a cylindrical tube structure, and the bin top is a cone-shaped cover structure with the pointed end facing upward. A grain inlet 101 is provided through the center of the bin top, and a valve is provided on the grain inlet 101. A grain outlet 102 is provided at the center of the bin bottom, and a valve is also provided on the grain outlet 102.

[0036] The central pipe 2 is fixedly installed in the center of the grain bin 1. The top of the central pipe 2 is connected to the grain inlet 101, and the bottom of the central pipe 2 is connected to the grain outlet 102. Multiple grain passages 201, connected to the grain bin 1, are provided on the side wall of the central pipe 2, spaced vertically. When grain is fed in, it enters the central pipe 2 through the grain inlet 101 and then enters the grain bin 1 through the grain passages 201. If necessary, an existing material distribution structure installed at the top of the grain bin 1 can be used to reduce the impact of feeding. When grain is discharged, the grain in the grain bin 1 enters the central pipe 2 through the grain passages 201 and then exits through the central pipe 2 through the grain outlet 102 to achieve centralized grain discharge. The specific structure of the central pipe 2 is existing technology and will not be described in detail here.

[0037] like Figure 4Four central measuring tubes 3 are fixedly installed on the side wall of the central tube 2, spaced circumferentially. Several first connecting ports 301 are spaced axially on the side wall of the central measuring tube 3, connecting to the interior of the grain bin 1. These first connecting ports 301 are arranged vertically to facilitate grain flow between the central measuring tube 3 and the grain bin 1. During grain discharge, the grain falls and flows through the central tube 2 and its grain outlets 201. A low-resistance path is formed at the grain outlets 201 to enter the central tube 2. However, the relatively small internal space, limited orifices, and difficulty in output of the central measuring tube 3 prevent the first connecting ports 301 from attracting a large volume of grain. The grain flow tends to exit through the grain outlets 201 and bypass the first connecting ports 301, thus reducing the impact of the grain flow on the temperature measuring cable 5 in the central measuring tube 3.

[0038] like Figure 2 The peripheral measuring tube 4 is fixed to the bottom of the grain bin 1 in a circular pattern, with the central tube 2 as the center. Several second connecting ports 401, connecting to the interior of the grain bin 1, are spaced apart along the axial direction on the sidewalls of the peripheral measuring tube 4. These second connecting ports 401 are arranged vertically at intervals to facilitate the flow of grain between the central measuring tube 3 and the grain bin 1. Unlike the first connecting port 301, which is constrained by the structure of the central measuring tube 3, the second connecting ports 401 can all face towards the direction close to the central tube 2, thus avoiding the impact of the grain flow.

[0039] Temperature measuring cables 5 are vertically threaded through both the central measuring tube 3 and the peripheral measuring tubes 4 for detecting the temperature of the grain. Their specific structure and operating principle utilize existing technology and will not be elaborated upon here. If necessary, a temperature and humidity measuring cable integrating a humidity sensor can be used to simultaneously detect temperature and humidity. The temperature measuring cable 5 uses a single-ended interface; its upper end is used for fixed mounting, and its lower end enters the wiring trench at the bottom of the grain silo 1 from the bottom of the central measuring tube 3 or the peripheral measuring tubes 4, connecting to the external main control system.

[0040] like Figure 1 and Figure 3 The top of the grain silo 1 is also fixedly equipped with a top connecting frame 8. The top connecting frame 8 is fixed to the top of the grain silo 1 and located above the grain loading line. The tops of the central measuring tube 3 and the peripheral measuring tubes 4 are both fixedly connected to the top connecting frame 8. Several hooks 9 are fixedly connected to the lower surface of the top connecting frame 8, such as... Figure 5 Each hook 9 is distributed in a central measuring tube 3 or a peripheral measuring tube 4; the top of the temperature measuring cable 5 is fixedly connected to a sling 501, and is hooked to the hook 9 through the sling 501.

[0041] Furthermore, multiple limiting clamps 6 are spaced along the axial direction within the peripheral measuring tube 4 to limit the temperature measuring cable 5 to the middle of the corresponding peripheral measuring tube 4. This allows for segmented guidance and limiting of the temperature measuring cable 5, thereby achieving stable spatial positioning of the cable within the measuring tube cavity. This ensures the temperature measuring cable 5 can be stably suspended in the central axis area of ​​the measuring tube, preventing it from touching the side wall or swinging freely within the cavity. It also prevents the temperature of the peripheral measuring tube 4 from affecting the measurement of the temperature measuring cable 5, and prevents cable entanglement, collision, or knotting caused by airflow disturbance or vibration during grain flow at the connecting port. Each limiting clamp 6 is positioned directly opposite a second connecting port 401 for easy installation and maintenance. The central measuring tube 3 can also use this structure to fix the temperature measuring cable 5 within it; this embodiment uses the peripheral measuring tube 4 as an example.

[0042] like Figure 6 The limiting structure includes a fixing rod 601, a limiting seat 602, and a limiting cover plate 603; one end of the fixing rod 601 is fixedly connected to the side wall of the peripheral measuring tube 4 away from its second communication port 401, so that the temperature measuring cable 5 is prevented from sticking to the side wall of the peripheral measuring tube 4, and the side wall temperature is prevented from affecting the detection results.

[0043] The other end of the fixing rod 601 is fixedly connected to the limiting seat 602. The limiting seat 602 has a limiting through groove 604 that opens toward the second communication port 401. The limiting cover plate 603 is detachably installed on the groove of the limiting through groove 604 to form a limiting space for the temperature measuring cable 5 to pass through and be limited. The limiting space can fix and limit the temperature measuring cable 5, or it can not limit its longitudinal displacement, so that the temperature measuring cable 5 can move longitudinally to relieve local stress.

[0044] Furthermore, a volume sensor assembly 7 is provided on the side of the limiting cover plate 603 facing the second communication port 401, which is used to detect the gas composition between the grains and determine whether problems such as mold growth or lack of oxygen have occurred. The gas sensor assembly 7 may specifically include an NDIR CO2 sensor, an electrochemical oxygen sensor, an electrochemical NH3 sensor, etc., all of which adopt existing technologies and will not be described in detail here. This embodiment aims to provide a fixed foundation and installation position for the existing volume sensor assembly 7 that can reduce the impact of grain flow, so as to comprehensively obtain the grain condition and reduce losses.

Claims

1. A wiring structure for a grain condition monitoring and control system inside a grain warehouse, characterized in that: It includes a grain warehouse (1) and a central pipe (2) located in the middle of the grain warehouse (1). The top of the central pipe (2) is connected to the grain inlet (101), and the bottom of the central pipe (2) is connected to the grain outlet (102). The side wall of the central pipe (2) is provided with multiple grain passages (201) that connect to the grain warehouse (1). Its features include: a central measuring tube (3), a peripheral measuring tube (4), and a temperature measuring cable (5); The side wall of the central tube (2) is fixedly provided with a plurality of central measuring tubes (3) spaced apart along its circumference; the side wall of the central measuring tube (3) is provided with a plurality of first connecting ports (301) that connect to the inside of the grain warehouse (1) spaced apart along its axial direction. The peripheral measuring tube (4) is fixed to the bottom of the grain warehouse (1) in a uniform circle around the center tube (2). The side wall of the peripheral measuring tube (4) is provided with several second connecting ports (401) that connect to the inside of the grain warehouse (1) at intervals along its axial direction. Temperature measuring cables (5) are vertically threaded inside both the central measuring tube (3) and the peripheral measuring tubes (4).

2. The wiring structure inside a grain warehouse for a grain condition monitoring and control system according to claim 1, characterized in that: The second connecting port (401) is opened in the direction close to the central tube (2).

3. The wiring structure inside a grain warehouse for a grain condition monitoring and control system according to claim 2, characterized in that: Multiple limiting clamps (6) are provided at intervals along the axial direction inside the peripheral measuring tube (4) to limit the temperature measuring cable (5) in the middle of the peripheral measuring tube (4); each limiting clamp (6) is distributed directly opposite a second connecting port (401).

4. The wiring structure inside a grain warehouse for a grain condition monitoring and control system according to claim 3, characterized in that: The limiting clamp includes a fixing rod (601), a limiting seat (602), and a limiting cover plate (603); One end of the fixing rod (601) is fixedly connected to the side wall of the peripheral measuring tube (4) away from its second communication port (401), and the other end of the fixing rod (601) is fixedly connected to the limiting seat (602). The limiting seat (602) has a limiting through groove (604) that opens toward the second communication port (401). The limiting cover plate (603) can be detachably installed on the opening of the limiting through groove (604) to form a limiting space for the temperature measuring cable to pass through and be limited.

5. The wiring structure inside a grain warehouse for a grain condition monitoring and control system according to claim 4, characterized in that: A gas sensor group (7) is provided on the side of the limiting cover plate (603) facing the second communication port (401).

6. The wiring structure inside a grain warehouse for a grain condition monitoring and control system according to any one of claims 1-5, characterized in that: It also includes a top connecting frame (8), which is fixed to the top of the grain bin (1) and located above the grain loading line. The tops of the central measuring tube (3) and the peripheral measuring tube (4) are both fixedly connected to the top connecting frame (8).

7. The wiring structure inside a grain warehouse for a grain condition monitoring and control system according to claim 6, characterized in that: The lower surface of the top connecting frame (8) is fixedly connected with several hooks (9), each hook (9) being distributed in a peripheral measuring tube (4); the top of the temperature measuring cable (5) is fixedly connected with a sling (501), and is hooked to the hook (9) through the sling (501).

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