Communication type laser gas chamber piston inclination measuring device

Abstract

The utility model relates to the technical field of inclination measurement, in particular to a communicated laser gas chamber piston inclination measuring device which comprises a plurality of measuring assemblies, each measuring assembly comprises a measuring cylinder, a floating plate and a laser measuring instrument, the measuring cylinders are filled with measuring liquid, and the plurality of measuring cylinders are communicated to form a communicating vessel system. When the piston is inclined, the liquid level heights of the measuring liquids in the measuring cylinders are not kept level any more, but are different; when the liquid level of the measuring liquid changes due to inclination of the piston, the position of the floating plate changes correspondingly, and the height change of the floating plate is detected through the laser measuring instrument, so that the inclination of the piston is measured. According to the communicated laser gas holder piston inclination measuring device, the original gas holder inclination measurement is changed from indirect measurement to direct measurement, and the measurement precision is improved.

Description

Technical Field

[0001] This utility model relates to the field of tilt measurement technology, and in particular to a connected laser gas holder piston tilt measurement device. Background Technology

[0002] Gas holders are critical containers for storing coal gas in steel and municipal enterprises. They are essential for gas storage and pressure regulation in pipeline distribution stations. The dynamic horizontal tilt parameter of the piston during daily operation is a crucial indicator of the gas holder's technical performance and operational status. During daily operation, the overall structural horizontal balance of the piston as it rises and falls with gas pressure directly affects the gas holder's stability and safe operation. Excessive horizontal tilt can lead to serious accidents such as piston jamming, piston overturning, diaphragm tearing, and gas leakage, resulting in air pollution, fires, explosions, and gas poisoning. Therefore, real-time monitoring of the piston tilt during operation of various types of gas holders (oil-sealed dry holders, diaphragm-sealed Wiggins holders, various vertical or spiral wet holders, and floating roof gas tanks) is extremely important. Timely understanding of the piston's tilt status is one of the most critical parameters for ensuring safe operation of gas holders and has become a key measurement item for emergency departments in recent years.

[0003] Currently, there are several methods for measuring the horizontal tilt of gas holders: the traditional horizontal glass tube method; the relative directional differential pressure method; the ring-type interconnected level method; and the top-distributed laser method. Each method has its own advantages and disadvantages. The traditional horizontal glass tube method involves arranging multiple glass tube level gauges on the top of the gas holder piston in a loop connection. The measurement connection is simple, the measurement is intuitive, and the cost is low. However, the measurement and recording data is lagging, data transmission is not possible, and the measuring fluid is prone to leakage. It is generally only used in the testing and commissioning phase of new gas holders. The relative differential pressure method and the ring-type interconnected level method have low measurement accuracy due to the low pressure itself and the limited accuracy range of the measuring instruments. Air bubbles can easily accumulate in the pipeline, affecting the measurement accuracy. The interconnected measurement data response is slow, the differential pressure and level measurements are lagging, the measuring fluid is prone to leakage, and the maintenance is high. The top-distributed laser method is a new measurement method that has emerged in recent years. It involves evenly distributing 3, 4, 6, or 8 laser probes in opposite directions on the top of the gas holder. The laser beam is directed onto the reflector plate on top of the gas holder piston. By dynamically measuring the real-time height of each point, the tilt value in each relative direction is reflected. From the current usage, laser has the advantages of rapid measurement and high measurement accuracy. However, the A / D conversion error of the high-range laser module (tens or even hundreds of meters) does not match the alarm quantity of the tilt requirement limit of about 30mm. The poor accuracy of the instrument after A / D conversion affects the measurement data. The matching reflector plate requires regular maintenance. The base of the laser emission point on the top of the cabinet is easily affected by seasonal temperature changes, strong winds, or vibrations of the gas holder body. Due to the thickness and stability of the supporting steel plate on the top of the cabinet, the laser emission point base is prone to deformation, resulting in large deviations in the measurement data. The measurement data is unstable, prone to sudden changes, and frequently causes false alarms, which may lead to misinterlocking of the gas holder recovery valve, tripping and refusing to accept gas, affecting production accidents. As a result, more and more companies are gradually using this method less. Utility Model Content

[0004] The purpose of this invention is to provide a connected laser gas holder piston tilt measuring device, which solves the problem of low measurement accuracy in various commonly used gas holder horizontal tilt measuring methods.

[0005] To achieve the above objectives, this utility model provides a connected laser gas holder piston tilt measuring device, including multiple measuring components, which are installed on the piston inside the gas holder and are connected to each other through pipes.

[0006] The measuring assembly includes a measuring cylinder, a float, and a laser measuring instrument. The measuring cylinder is filled with measuring liquid. The float is movably disposed inside the measuring cylinder and floats on the measuring liquid. The laser measuring instrument is fixedly connected to the measuring cylinder and is located at the top of the measuring cylinder. The measuring cylinder has a ring tube inlet and a ring tube outlet, which are respectively connected to the measuring cylinder.

[0007] The measuring assembly also includes a glass tube level gauge, which is fixedly connected to and communicates with the measuring cylinder and is located on one side of the measuring cylinder.

[0008] The measuring component also includes a drain valve, which is connected to the measuring cylinder and is located at the bottom of the measuring cylinder.

[0009] The interconnected laser gas holder piston tilt measuring device further includes a supplementary component, which includes a supplementary cylinder and a self-weight buoyancy valve. The supplementary cylinder is installed on the piston inside the gas holder. The self-weight buoyancy valve is fixedly connected to the supplementary cylinder, located on one side of the supplementary cylinder, and communicates with the supplementary cylinder.

[0010] The measuring cylinder also has a replenishing liquid inlet, which is located on the measuring cylinder and communicates with it. The replenishing liquid inlet is also connected to the ring pipe inlet via a pipe.

[0011] This invention discloses a connected laser gas holder piston tilt measuring device. Multiple measuring cylinders are interconnected to form a communicating vessel system. When the piston tilts, the liquid levels of the measuring liquid in each measuring cylinder will no longer remain level, but will differ. When the piston tilt causes a change in the liquid level, the position of the float plate will also change accordingly. The change in the height of the float plate is detected by the laser measuring instrument, thereby measuring the piston tilt. This connected laser gas holder piston tilt measuring device changes the original indirect gas holder tilt measurement to a direct measurement, improving measurement accuracy. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0013] Figure 1 This is a schematic diagram of the overall structure of the interconnected laser gas holder piston tilt measuring device of this utility model.

[0014] Figure 2 This is the utility model Figure 1 Enlarged view of point A.

[0015] In the diagram: 101-Measuring component, 102-Measuring cylinder, 103-Float plate, 104-Laser measuring instrument, 105-Measuring fluid, 106-Ring pipe inlet, 107-Ring pipe outlet, 108-Glass tube level gauge, 109-Drain valve, 110-Replenishment component, 111-Replenishment cylinder, 112-Self-weight buoyancy valve, 113-Replenishment fluid inlet. Detailed Implementation

[0016] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0017] Please see Figure 1 and Figure 2 ,in Figure 1 This is a schematic diagram of the overall structure of the interconnected laser gas holder piston tilt measuring device. Figure 2 yes Figure 1 Enlarged view of point A.

[0018] This utility model provides a connected laser gas holder piston tilt measuring device, including multiple measuring components 101 and a supplementary component 110. The measuring components 101 include a measuring cylinder 102, a float 103, a laser measuring instrument 104, a glass tube level gauge 108, and a drain valve 109. The supplementary component 110 includes a supplementary cylinder 111 and a self-weight buoyancy valve 112. Multiple measuring cylinders 102 are connected by pipelines. When the piston tilts, the liquid level of the measuring liquid 105 inside each measuring cylinder 102 is different. At this time, the height of the float 103 is measured by the laser measuring instrument 104, thereby measuring the tilt of the piston. It can be understood that the above solution can be used to improve measurement accuracy and also to facilitate maintenance.

[0019] In this specific embodiment, multiple measuring components 101 are mounted on a piston inside the gas holder, and these components are connected by pipes. The measuring cylinder 102 is filled with measuring liquid 105. A float 103 is movably mounted inside the measuring cylinder 102 and floats on the measuring liquid 105. The laser measuring instrument 104 is fixedly connected to the measuring cylinder 102 and located at the top of the measuring cylinder 102. The measuring cylinder 102 has a ring pipe inlet 106 and a ring pipe outlet 107, which are respectively connected to the measuring cylinder 102. A support is provided at the bottom of the measuring cylinder 102, which facilitates the installation of the measuring cylinder 102 on the gas holder piston (not shown in the figure). Multiple measuring components 101 are arranged in a ring near the circumference of the piston top box beam inside the gas holder, specifically four, six, or eight (generally an even number). The ring pipe inlet 106 on one measuring cylinder 102 is connected to the ring pipe outlet 107 on another measuring cylinder 102, and multiple measuring cylinders 102 are connected in a ring through pipelines. The density of the float 103 is less than the density of the measuring liquid 105, so that the float 103 can float on the measuring liquid 105.

[0020] In this invention, multiple measuring cylinders 102 are interconnected to form a communicating vessel system. When the piston tilts, the liquid level of the measuring liquid 105 in each measuring cylinder 102 will no longer remain level, but will differ. When the piston tilts, causing a change in the liquid level of the measuring liquid 105, the position of the float 103 will also change accordingly. The change in the height of the float 103 is detected by the laser measuring instrument 104, thereby detecting the change in the liquid level. Based on the real-time liquid level of the measuring liquid 105 in the multiple measuring cylinders 102, the tilt value in each relative direction can be directly determined. Alternatively, the tilt value of each column position of the gas holder and the current maximum tilt point and tilt value can be calculated based on the data model. This invention's interconnected laser gas holder piston tilt measuring device changes the original indirect gas holder tilt measurement to direct measurement, improving measurement accuracy.

[0021] The glass tube level gauge 108 is fixedly connected to and communicates with the measuring cylinder 102, and is located on one side of the measuring cylinder 102. The measuring liquid 105 inside the measuring cylinder 102 can flow into the glass tube level gauge 108, so that the liquid level height in all directions can be directly seen, and a direct comparison with the laser measuring liquid 105 level can be formed, which has mutual reference.

[0022] Secondly, the drain valve 109 is connected to the measuring cylinder 102 and is located at the bottom of the measuring cylinder 102; when it is necessary to replace the measuring liquid 105 inside the measuring cylinder 102, the drain valve 109 is opened to allow the measuring liquid 105 inside the measuring cylinder 102 to be discharged.

[0023] Meanwhile, the replenishment cylinder 111 is installed on the piston inside the gas holder; the self-weight buoyancy valve 112 is fixedly connected to the replenishment cylinder 111, located on one side of the replenishment cylinder 111, and communicates with the replenishment cylinder 111.

[0024] In addition, the replenishing liquid inlet 113 is disposed on the measuring cylinder 102 and communicates with the measuring cylinder 102, and the replenishing liquid inlet 113 is connected to the ring pipe inlet 106 through a pipe.

[0025] The basic structure of the replenishment cylinder 111 is the same as that of the measuring cylinder 102, except that the replenishment cylinder 111 is equipped with a self-weight buoyancy valve 112. When the liquid level of the measuring liquid 105 inside the measuring cylinder 102 is lower than the lowest liquid level in the measuring cylinder 102, the self-weight buoyancy valve 112 automatically opens and automatically replenishes the measuring liquid 105 into the measuring cylinder 102 through the pipeline. When the measuring liquid 105 reaches the highest liquid level in the measuring cylinder 102, the self-weight buoyancy valve 112 automatically closes. There is no need to frequently enter the gas cabinet to check the liquid level in the measuring cylinder 102. When the measuring liquid 105 inside the measuring cylinder 102 is replenished and the liquid level in the measuring cylinder 102 is lower than the lowest liquid level, the laser measuring instrument 104 judges and alarms based on the lowest liquid level data, prompting maintenance personnel to enter the cabinet for maintenance and inspection.

[0026] This utility model's interconnected laser gas holder piston tilt measuring device changes the original indirect gas holder tilt measurement to a direct measurement; it overcomes the shortcomings of the original top-mounted laser measurement method, which is easily affected by changes in the gas holder top structure and the differential pressure method, which is prone to air bubble buildup and poor fluidity, thus affecting the accuracy of the measurement data; it eliminates the inconvenience of having to enter the gas holder once a month to wipe the reflector, reducing the labor intensity of maintenance personnel and improving work safety; it is equipped with the replenishment cylinder 111 and the self-weight buoyancy valve 112, which automatically opens to replenish according to the minimum liquid level requirement in the measuring cylinder 102, reducing the maintenance frequency from once a month to once a year; it is equipped with the glass tube level gauge 108, which allows for a direct view of the liquid level in all directions, enabling direct comparison with the laser-measured liquid level 105, providing mutual reference; it reduces the measurement range from tens to hundreds of meters to only about one meter, thus reducing the measurement error of the instrument.

[0027] This utility model has the following beneficial effects:

[0028] 1. Overcomes the shortcomings of various commonly used methods for measuring the horizontal tilt of gas holders, and is not affected by changes in the top structure of the gas holder;

[0029] 2. No need to periodically wipe the reflector inside the cabinet;

[0030] 3. The measuring liquid has good fluidity, allowing for rapid measurement;

[0031] 4. It can automatically replenish backup liquid when the liquid level in the measuring cylinder is low, and automatically alarm to prompt maintenance personnel to enter the cabinet for maintenance when the liquid level is too low. This makes the maintenance prompts more targeted and eliminates the need for frequent entry into the gas holder for maintenance, reducing the maintenance cycle to once a year. This reduces the workload of maintenance personnel and improves safety.

[0032] 5. The measurement data can be directly compared with the measurement value of the glass tube level gauge on site, which is highly referential and provides a reference and specific guidance for cabinet maintenance;

[0033] 6. Equipped with a small-range laser sensor, leveraging the advantages of high measurement accuracy and fast response of laser sensors, the original indirect measurement of the cabinet top tilt using a large-range laser is replaced with direct laser measurement of the piston body tilt value, thus improving measurement accuracy.

[0034] This utility model can be used on dry membrane gas holders, dry thin oil sealed gas holders, and wet sealed gas holders. It can also be used on similar large-diameter storage tanks that use floating roofs for gas and liquid storage to measure the horizontal inclination of the movable floating roof. The method of directly measuring the horizontal inclination of the movable floating roof by using this connected laser to measure the liquid level is within the protection scope of this patent.

[0035] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A laser-based communication type coal gas holder piston inclination measuring device, characterized in that, a plurality of measuring assemblies are arranged on the piston inside the gas holder, and the plurality of measuring assemblies are connected through pipes; the measuring assembly comprises a measuring cylinder, a floating plate and a laser measuring instrument, the measuring cylinder is filled with measuring liquid inside, the floating plate is movably arranged inside the measuring cylinder and floats on the measuring liquid, the laser measuring instrument is fixedly connected with the measuring cylinder and located at the top of the measuring cylinder, the measuring cylinder has a ring pipe inlet and a ring pipe outlet, and the ring pipe inlet and the ring pipe outlet are respectively communicated with the measuring cylinder.

2. The laser-based communication type coal gas holder piston inclination measuring device according to claim 1, characterized in that, the measuring assembly further comprises a glass tube liquid level meter, the glass tube liquid level meter is fixedly connected with the measuring cylinder and communicated with the measuring cylinder, and located at one side of the measuring cylinder.

3. The laser-based communication type coal gas holder piston inclination measuring device according to claim 1, characterized in that, the measuring assembly further comprises a blowdown valve, the blowdown valve is communicated with the measuring cylinder and arranged at the bottom of the measuring cylinder.

4. The laser-based communication type coal gas holder piston inclination measuring device according to claim 1, characterized in that, the laser-based communication type coal gas holder piston inclination measuring device further comprises a supplement assembly, the supplement assembly comprises a supplement cylinder and a self-weight buoyancy valve, the supplement cylinder is arranged on the piston inside the gas holder; the self-weight buoyancy valve is fixedly connected with the supplement cylinder and located at one side of the supplement cylinder, and communicated with the supplement cylinder.

5. The laser-based communication type coal gas holder piston inclination measuring device according to claim 4, characterized in that, the measuring cylinder further has a supplement liquid inlet, the supplement liquid inlet is arranged on the measuring cylinder and communicated with the measuring cylinder, and the supplement liquid inlet is communicated with the ring pipe inlet through a pipe.

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