Synchronous computing natural gas energy metering device and Internet of Things system

Abstract

The present invention discloses a synchronous operation type natural gas energy metering device, including a management platform and a shell, wherein a data preprocessing module and an energy calculation module are arranged in the shell, wherein the data preprocessing module is used to classify and store the perception information of natural gas, and transmit the perception information to the energy calculation module; the energy calculation module calculates the standard flow rate within a set time period through the perception information transmitted by the data preprocessing module, and matches the natural gas unit calorific value corresponding to the standard flow rate through the data preprocessing module, and realizes natural gas energy metering through the product of the two; the data preprocessing module can transmit the processed information to the management platform, and the management platform realizes remote energy metering and accounting. The present invention realizes the integrated design of the natural gas energy metering device, the parameters of each functional module are well matched, and the metering is more accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of natural gas energy metering, and in particular to a synchronous computing natural gas energy metering device and an Internet of Things system. Background Art

[0002] As a high-quality, efficient, clean energy and important chemical raw material, natural gas has been widely valued and given priority in all countries around the world, accounting for 35% of the energy structure. With the increasing status of natural gas as an environmentally friendly energy source, accurate, fair and impartial measurement of natural gas is an important technical work for scientific management of natural gas, which is related to the interests of many parties. At the same time, as a fuel, the actual value of natural gas should be its calorific value rather than its volume. The natural gas measurement method abroad generally adopts the energy measurement method, so it is inevitable that unnecessary disputes will arise during the natural gas trade handover process with other countries. Therefore, it is of great significance to carry out research on natural gas energy metering equipment.

[0003] Existing natural gas gathering and transportation stations are equipped with metering equipment, but traditional metering equipment not only has a low response speed, but also has poor metering accuracy. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art and to provide a synchronous computing natural gas energy metering device to achieve an integrated design of the natural gas energy metering device, with good matching of parameters of each functional module and more accurate metering.

[0005] The present invention is implemented through the following technical scheme: it includes a management platform and a shell, wherein a data preprocessing module and an energy calculation module are arranged in the shell, wherein the data preprocessing module is used to classify and store the perception information of natural gas, and transmit the perception information to the energy calculation module; the energy calculation module calculates the standard flow rate within a set time period through the perception information transmitted by the data preprocessing module, and matches the unit calorific value of natural gas corresponding to the standard flow rate through the data preprocessing module, and realizes natural gas energy metering through the product of the two; the data preprocessing module can transmit the processed information to the management platform, and the management platform realizes remote energy metering and accounting.

[0006] Furthermore, it also includes a flow sensor, a pressure sensor and a temperature sensor arranged in the shell, and the flow sensor, pressure sensor and temperature sensor are used to collect perception information of natural gas and transmit the collected perception information to the data preprocessing module; it also includes a touch display screen and a communication module arranged in the shell, the touch display screen is respectively connected to the data preprocessing module and the energy calculation module, and the communication module is respectively electrically connected to the energy calculation module and the data preprocessing module to realize two-way communication; the data preprocessing module also transmits the acquired perception information of natural gas to the communication module, and the communication module realizes external information interaction.

[0007] Furthermore, it also includes a calorific value analysis and processing module arranged in the shell, the output end of the calorific value analysis and processing module is connected to the data preprocessing module, and the input end of the calorific value analysis and processing module is provided with a sample gas processing system and a standard gas processing system. The calorific value analysis and processing module calculates the calorific value of the standard gas after the standard gas processing system removes impurities, and compares the calculation result with the standard value of the calorific value of the standard gas to realize the calibration of the calorific value analysis and processing module; the calorific value analysis and processing module calculates the calorific value of the sample gas after the sample gas processing system removes impurities, and transmits the calculated natural gas unit calorific value information corresponding to the standard flow rate to the data preprocessing module;

[0008] The input end of the sample gas processing system is also provided with a sample gas controller, the input end of the sample gas controller is also provided with a sample gas collection interface, and the input end of the standard gas processing system is also provided with a standard gas collection interface. Furthermore, the sample gas collection interface also includes a sampling tube arranged in the shell and connected to the gas pipe, an air pump connected to the sampling tube is also provided on the outer wall of the sampling tube, a first telescopic member is provided in the sampling tube, and the movable end of the first telescopic member is provided with a de-impurity element for discharging the fluid in the sampling tube; and a third telescopic member is also provided in the shell, and the movable end of the third telescopic member is provided with a sealing plate for sealing the gas pipe, and a limiting member for fixing the sealing plate is also provided in the gas pipe, and when the de-impurity element extends into the gas pipe, the limiting member can remove the fixation of the sealing plate.

[0009] In view of the natural gas energy metering device in the prior art, when measuring the natural gas in the gas pipe, since the traditional sample gas collection interface adopts the connection between the sampling tube and the gas pipe, when it is necessary to collect the natural gas in the gas pipe, the set air pump is used to generate suction in the sampling tube, and the natural gas in the gas pipe is sucked into the sampling tube for subsequent energy analysis. However, when sampling the natural gas in different time periods, a part of the sample gas collected in the previous time period will always remain in the sampling tube, resulting in that when the natural gas in the gas pipe is collected again in the next time period, the natural gas collected in the two time periods will be mixed together, resulting in an error in the energy value of the natural gas measured in the time period. For this reason, the technical solution is provided with a first telescopic member and a de-impurity element in the existing sampling tube. When the first telescopic member moves along the axial direction of the sampling tube in the sampling tube, it can drive the de-impurity element to move in the sampling tube, so that the natural gas remaining in the sampling tube collected in the previous time period is discharged into the gas pipe, thereby achieving the purpose of removing impurities in the sampling tube, thus ensuring that the natural gas collected in the sampling tube in this time period will not contain the remaining natural gas in the previous time period, thereby ensuring that the energy value of the natural gas measured in this time period is more accurate.

[0010] At the same time, when actually collecting natural gas in the gas pipe, the natural gas in the gas pipe is in a flowing state. When the natural gas flow rate in the gas pipe is fast, the span of the natural gas collected before and after a certain period is large, and it is impossible to accurately reflect the reasonable energy value of the gas pipe in this period. For this reason, the technical solution is also provided with a sealing plate for sealing the gas pipe in the shell. When the natural gas in the sampling tube in the previous period is discharged into the gas pipe by the provided impurity removal element, the impurity removal element is extended into the gas pipe. The impurity removal element can remove the constraint of the limiting member on the sealing plate, so that under the action of the third telescopic member, the sealing plate can be driven to be inserted into the gas pipe and the gas pipe is sealed, so that the natural gas in the gas pipe at this time stops flowing under the action of the sealing plate. Therefore, in the subsequent process of collecting natural gas in the gas pipe, it can be ensured that the span of the collected natural gas is not large, thereby ensuring that the natural gas collected in this period is within a reasonable range, avoiding the large interval between the natural gas collected before and after due to the natural gas flowing in the gas pipe, and ultimately resulting in the inaccurate natural gas energy value measured in this period.

[0011] Furthermore, a fixed rod is provided in the sampling tube, one end of the fixed rod extends into the first telescopic member, and the other end can extend into the gas pipe; the impurity removal element includes a first movable block and a second movable block whose outer diameters match the inner diameters of the sampling tube, the first movable block and the second movable block are both sleeved on the fixed rod, and the movable end of the first telescopic member is connected to the first movable block; the fixed rod is also provided with an exhaust hole for discharging the fluid in the sampling tube, and the exhaust hole can be opened when the first movable block moves toward the second movable block.

[0012] In the technical solution, a first movable block and a second movable block are arranged in the existing sampling tube. Both the first movable block and the second movable block can move in the sampling tube along the axial direction of the sampling tube, and a fixed rod slidably connected to the first movable block and the second movable block respectively is arranged in the sampling tube. The fixed rod is also provided with an exhaust hole for discharging the fluid in the sampling tube. When it is necessary to collect the natural gas in the gas pipe during the period, the first movable block is first moved toward the second movable block. Since the outer diameter of the first movable block is consistent with the inner diameter of the sampling tube, the first movable block can compress the natural gas remaining in the sampling tube in the previous period during the movement. At the same time, the exhaust hole on the fixed rod is in an open state. Therefore, when the first movable block compresses the natural gas remaining in the sampling tube, it can quickly discharge it into the gas pipe from the exhaust hole, thereby achieving the purpose of discharging the natural gas remaining in the sampling tube during the natural gas collection process in the previous period.

[0013] When collecting natural gas in the gas pipe, since the fixed rod is able to move along its axial direction in the sampling tube, the first movable block and the second movable block are brought together to exhaust all the natural gas remaining in the sampling tube, and then the first movable block and the second movable block located close together on the fixed rod are extended into the gas pipe together by using the fixed rod, and then the first movable block is first withdrawn into the sampling tube. In the process of the first movable block being withdrawn into the sampling tube, the negative pressure generated can suck the natural gas in the gas pipe during this period into the sampling tube, thereby realizing the rapid collection of the natural gas during this period. At the same time, after the collection of the natural gas during this period is completed, the second movable block is also withdrawn into the sampling tube, and the pipe mouth of the sampling tube is sealed, thereby ensuring that the natural gas of different periods can be accurately collected in the sampling tube, so that the energy value of the natural gas measured in each period is more accurate.

[0014] Furthermore, a second telescopic member is also provided inside the first telescopic member, one end of the second telescopic member is connected to the inner top surface of the first telescopic member, and the other end is connected to the fixed rod; the first telescopic member, the second telescopic member and the third telescopic member are all bellows, the first telescopic member is connected to the third telescopic member through a connecting pipe, and the first telescopic member and the second telescopic member are respectively connected to the pump body through an air pipe.

[0015] The first telescopic member is used to drive the first movable block to move normally in the sampling tube.

[0016] The second telescopic member is used to drive the normal movement of the fixed rod in the sampling tube. The first telescopic member, the second telescopic member and the third telescopic member in the technical solution all adopt bellows, which are connected to the pump body arranged in the shell through the air pipe. The first telescopic member and the second telescopic member are filled with gas by the pump body. Since the bellows can expand and stretch along its axial direction after being inflated, the first telescopic member and the second telescopic member can be used to adjust the positions of the first movable block and the fixed rod in the sampling tube respectively. At the same time, since the technical solution adopts a connecting tube to connect the first telescopic member with the third telescopic member, when air is ventilated to the first telescopic member in the initial state, the blocking plate is in a The locking state allows the gas entering the first telescopic member to first force the first telescopic member to collide with the sampling tube, drive the first movable block to move in the sampling tube, and discharge the natural gas remaining in the previous period. When the fixed rod, the first movable block and the second movable block are extended into the gas pipe together, the constraint of the limiting member on the sealing plate is removed, so that the gas filled into the first telescopic member enters the third telescopic member through the connecting pipe, forcing the third telescopic member to collide and stretch along its axial direction, pushing the sealing plate into the gas pipe, thereby sealing the gas pipe and sealing the natural gas in the gas pipe, thereby ensuring that the natural gas collected during this period has a large front-to-back span.

[0017] Furthermore, a channel is provided in the fixing rod, one end of the channel is connected to the exhaust hole, and the other end is connected to the side wall of the fixing rod; a connecting hole with an inner diameter matching the outer diameter of the fixing rod is provided on the second movable block, and the fixing rod is inserted into the connecting hole. A first accommodating cavity is provided on the inner wall of the connecting hole, and a first elastic member and a blocking block are provided in the first accommodating cavity. The elastic force generated by the first elastic member can push the blocking block to be inserted into the channel and block the channel.

[0018] In order to ensure that the exhaust hole close to the lower end of the fixed rod can be opened when the first telescopic member drives the first movable block to move toward the second movable block, and at the same time ensure that the exhaust hole is in a blocked state when the first movable block moves away from the second movable block, an inverted "T" structured channel is provided in the fixed rod, the upper end of the channel is connected with the exhaust hole, and the other two ends of the channel are respectively connected with the two sides of the fixed rod; when the blocking block on the inner wall of the connecting hole of the second movable block is flush with the channel, the blocking block is pushed into the channel under the action of the first elastic member to block the channel, thereby achieving the blocking of the exhaust hole.

[0019] When the first movable block moves toward the second movable block, the first movable block compresses the natural gas remaining in the sampling tube, forcing the natural gas to enter the channel through the exhaust hole and act on the blocking block in the channel. As the pressure generated by the first movable block during movement gradually increases, when the pressure is greater than the elastic force of the first elastic member, the blocking block is forced to compress the first elastic member and retract into the first accommodating chamber. At this time, the fixed rod removes the restraining force of the blocking block on it, and the second telescopic member is a bellows. When the first movable block moves in the sampling tube, the air pressure generated by the compressed natural gas can force the fixed rod to actively move toward the gas pipe, and cause the channel on the fixed rod to be misaligned with the first accommodating chamber, and finally extend the channels on both sides of the fixed rod into the gas pipe, thereby realizing the connection between the gas pipe and the exhaust hole, so that the natural gas remaining in the sampling tube can finally enter the gas pipe through the exhaust hole and the channel in turn, and discharge the gas remaining in the sampling tube in the previous period of sampling.

[0020] When the first movable block and the second movable block are brought together, the exhaust hole is blocked under the action of the first movable block. At this time, under the action of the second telescopic member, the fixing rod can be pulled back to retract. When the channel on the fixing rod is retracted to be flush with the blocking block, under the action of the first elastic member, the blocking block is reinserted into the channel, and the second movable block is re-fixed on the fixing rod, thereby ensuring that the exhaust hole is in a closed state.

[0021] Furthermore, the limiting member includes a locking member and an L-shaped connecting plate; the gas pipe is a square tube, and is provided with a guide hole and a strip opening matching the sealing plate, and the strip opening and the guide hole are both connected to the inside of the gas pipe, and the sealing plate can be inserted into the gas pipe through the strip opening to seal the gas pipe, and a limiting hole is also provided on the side wall of the sealing plate; one end of the connecting plate is connected to the end of the fixing rod facing the gas pipe, and the other end can be inserted into the guide hole, and a limiting cavity connected to the guide hole is provided on the inner wall of the strip opening, and the locking member is located in the limiting cavity, and when the connecting plate is inserted into the guide hole, the connecting plate can push the locking member to be inserted into the limiting hole on the sealing plate.

[0022] In the initial state, when the fixed rod has not been extended into the gas pipe, the L-shaped connecting plate is inserted into the guide hole, forcing the locking member in the limiting cavity to be inserted into the limiting hole on the sealing plate to fix the sealing plate; after the fixed rod is extended into the gas pipe, the connecting plate moves with the fixed rod, so that the connecting plate moves out of the limiting hole, removing the restraining force on the sealing plate, so that the third telescopic member can push the sealing plate to be inserted into the gas pipe to seal the gas pipe.

[0023] Furthermore, the locking member includes a first limit block, a second limit block and a fourth elastic member, the first limit block, the second limit block and the fourth elastic member are all located in the limit cavity, and the two ends of the fourth elastic member are respectively connected to the first limit block and the second limit block, and the second limit block can be inserted into the limit hole; the square end of the first limit block facing the guide hole is also provided with a bevel.

[0024] Specifically, in the initial state, since the connecting plate is inserted into the guide hole, an extrusion force is generated on the first limit block, forcing the first limit block to compress the fourth elastic member and push the second limit block to be inserted into the limit hole of the blocking plate, thereby fixing the blocking plate; and when the connecting plate moves together with the fixing rod and moves out of the guide hole, under the action of the fourth elastic member, the first limit block can be pushed to move from the limit cavity to the guide hole, and at the same time, the second limit block is pulled out of the limit hole of the blocking plate, thereby removing the constraint on the blocking plate; When the fixing rod drives the connecting plate to be reinserted into the guide hole, the end of the connecting plate acts on the hypotenuse of the first limit block, forcing the first limit block to move from the guide hole to the limit cavity again and apply pressure to the fourth elastic member, and the fourth elastic member applies elastic force to the second limit block. In the process of the third telescopic member pulling the sealing plate back to the shell, when the limit hole on the sealing plate moves to be flush with the second limit block, under the action of the fourth elastic member, the second limit block is pushed to be reinserted into the limit hole to continue to fix the sealing plate.

[0025] A fixing plate is also provided in the shell, one end of the third telescopic member is sealedly connected to the fixing plate, and the other end is sealedly connected to the sealing plate; a placement groove is also provided on the inner wall of the gas pipe, and a fifth elastic member is also provided in the placement groove, one end of the fifth elastic member is connected to the inner bottom of the placement groove, and the other end is connected to the end of the sealing plate facing the gas pipe.

[0026] The fixed plate is used to fix the third telescopic member, so as to ensure that after the third telescopic member is inflated, the third telescopic member can only be stretched toward the blocking plate.

[0027] In order to improve the response speed of the sealing plate, a fifth elastic member is provided. When the limiting member fixes the sealing plate, the fifth elastic member is in a stretched state. Therefore, when the limiting member is unlocked, the sealing plate can be pulled to quickly seal the gas pipe under the action of the fifth elastic member.

[0028] Furthermore, a second accommodating cavity is provided on both sides of the inner wall of the sampling tube, and a second elastic member and a limit block are provided in the second accommodating cavity; a third accommodating cavity is provided on both sides of the second movable block, and when the third accommodating cavity on the second movable block moves to be flush with the second accommodating cavity, the elastic force generated by the second elastic member can push the limit block to be inserted into the third accommodating cavity.

[0029] In the present technical solution, when the exhaust hole needs to be connected to the gas pipe, the second movable block needs to be separated from the fixed rod, and at the same time, the second movable block needs to be fixed to the inner wall of the sampling tube, so as to ensure that the fixed rod can move smoothly on the second movable block. Therefore, a second elastic member and a limit block are provided on the inner wall of the sampling tube, and the elastic force generated by the second elastic member is used to push the limit block to be inserted into the third accommodating cavity of the second movable block, thereby realizing the fixation between the second movable block and the sampling tube.

[0030] Furthermore, a first unlocking block is provided at the end of the first movable block facing the second movable block, a notch is provided at the end of the first unlocking block facing the second movable block, a third elastic member and a second unlocking block are provided in the notch; a groove is provided at the end surface of the second movable block facing the first movable block, the first unlocking block can be inserted into the groove, and the groove is connected to the third accommodating cavity; the elastic force of the third elastic member is greater than the elastic force of the second elastic member.

[0031] When it is necessary to sample the natural gas in the gas pipe, in order to ensure that the second movable block can be smoothly separated from the sampling tube, a first unlocking block, a third elastic member and a second unlocking block are also provided on the first movable block. When the first movable block and the second movable block are close to each other, the first unlocking block on the first movable block can be inserted into the groove on the second movable block. When the first movable block and the second movable block are completely close to each other, the second unlocking block is flush with the limit block, and under the action of the third elastic member, the limit block is pushed back into the second accommodating cavity by the second unlocking block, thereby realizing the removal of the constraint of the limit block on the second movable block, so that the second movable block can smoothly move in the sampling tube following the fixed rod.

[0032] Furthermore, the limiting block and the second unlocking block are both conical structures, and the cone tips of the limiting block and the second unlocking block face each other.

[0033] Since the second unlocking block needs to retract the limit block into the second accommodating cavity, when the first movable block moves back in a direction away from the second movable block, in order to ensure that the second unlocking block located in the third accommodating cavity can be smoothly moved out of the groove of the second movable block, the second unlocking block is set to a conical structure, so that in the process of the second unlocking block moving upward, the conical surface of the second unlocking block is used to force the second unlocking block to retract in the direction of the third elastic member, so that the second unlocking block can smoothly pass through the groove;

[0034] Similarly, when the first unlocking block on the first movable block is inserted into the groove, the upper surface of the second movable block acts on the conical surface of the second unlocking block, forcing the second unlocking block to compress the third elastic member, thereby being smoothly inserted into the groove.

[0035] When the fixed rod drives the second movable block and the first movable block to extend into the gas pipe together, the first movable block and the second movable block need to be retracted into the sampling tube in turn. In order to ensure that the first movable block and the second movable block can pass through the limit block smoothly, the limit block is also set to a conical structure, and the second movable block and the first movable block are used to act on the conical surface of the limit block, so that the limit block is retracted into the second accommodating cavity.

[0036] The synchronous computing natural gas energy metering Internet of Things system includes a user platform, a service platform, a management platform, a sensor network platform and a perception control platform that interact in sequence;

[0037] The perception control platform is the above-mentioned natural gas energy metering device, and the perception control platform transmits the acquired perception information to the management platform through the sensor network platform; the management platform includes an energy metering management system, and the energy metering management system performs comprehensive analysis and processing on the received perception information, transmits user demand information to the user platform through the service platform, and issues control instructions to the perception control platform through the sensor network platform.

[0038] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0039] 1. The present invention realizes the integrated design of the natural gas energy metering device, the parameters of each functional module are well matched, and the metering is more accurate; the integrated design is conducive to improving customer procurement efficiency and equipment management efficiency, and can realize the synchronous metering of natural gas energy by the metering device and the management platform, and realize the intelligent management and operation of natural gas energy metering by establishing an Internet of Things operation system;

[0040] 2. When collecting natural gas in the gas pipe, the present invention uses the first telescopic member to drive the first movable block to move in the sampling pipe, and quickly discharges the natural gas remaining in the sampling pipe in the previous period from the exhaust hole on the fixed rod into the gas pipeline, and then extends the second movable block from the pipe mouth of the sampling pipe into the gas pipe, and uses the negative pressure generated when the first movable block moves back to draw the natural gas in this period into the sampling pipe, thereby ensuring that the sampling pipe can accurately collect natural gas in different periods, and thus making the energy value of the natural gas measured in each period more accurate;

[0041] 3. In the process of using the first movable block to discharge the natural gas remaining in the sampling tube, the compressed natural gas enters the channel and acts on the blocking block, forcing the blocking block to move out of the channel, so that the fixed rod can be extended into the gas pipe to connect the exhaust hole with the gas pipe, thereby achieving the purpose of quickly discharging the natural gas remaining in the sampling tube. When collecting natural gas, the set blocking block can be inserted into the channel to re-block the exhaust hole and ensure that the second movable block and the fixed rod can be stably connected;

[0042] 4. When collecting natural gas in a gas pipe, the present invention can use the third telescopic member to drive the sealing plate to be inserted into the gas pipe to temporarily seal the gas pipe, thereby making the front and back span of the natural gas collected during this period smaller, thereby ensuring that the collected natural gas is within a reasonable range, and further improving the accuracy of the energy value of the natural gas measured during this period. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings:

[0044] Figure 1 It is a schematic diagram of the structure of the present invention;

[0045] Figure 2 It is a schematic diagram of the internal structure of the housing of the present invention;

[0046] Figure 3 It is a schematic diagram of the structure of the housing of the present invention in one state;

[0047] Figure 4 It is a schematic diagram of the structure of the housing of the present invention in another state;

[0048] Figure 5 For the present invention Figure 2 The structural diagram of the enlarged part A in the middle;

[0049] Figure 6 For the present invention Figure 3 The structural diagram of the enlarged part B in the middle;

[0050] Figure 7 For the present invention Figure 4 The schematic diagram of the structure after the enlargement of the middle C part;

[0051] Figure 8 For the present invention Figure 6 The structural diagram of the enlarged D part in the middle;

[0052] Fig. 9 For the present invention Figure 3 The structural diagram of the enlarged part E in the middle;

[0053] Fig.10 This is a schematic diagram of the system architecture in Embodiment 3.

[0054] Marks and corresponding parts names in the attached drawings:

[0055] 1-shell, 2-gas pipe, 3-sampling tube, 4-air pump, 5-first telescopic member, 7-first movable block, 8-fixed rod, 9-exhaust hole, 10-second movable block, 11-channel, 12-first elastic member, 13-blocking block, 14-groove, 15-second telescopic member, 16-second elastic member, 17-limiting block, 18-blocking plate, 19-third telescopic member, 20-fifth elastic member, 21-second unlocking block, 22-third elastic member, 23-first unlocking block, 24-connecting pipe, 25-fixed plate, 26-connecting plate, 27-first limiting block, 28-second limiting block, 29-fourth elastic member. DETAILED DESCRIPTION

[0056] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The exemplary embodiments of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0057] Example 1

[0058] like Figure 1 As shown, the present invention includes a shell 1, in which a data preprocessing module and an energy calculation module are arranged. The data preprocessing module is used to classify and store the perception information of natural gas, and transmit the perception information to the energy calculation module; the energy calculation module calculates the instantaneous working condition flow rate of natural gas through the perception information transmitted by the data preprocessing module, realizes the conversion to the instantaneous standard condition flow rate and the calculation of the standard condition flow rate within a set time period, and matches the unit calorific value of natural gas corresponding to the standard condition flow rate through the data preprocessing module, and realizes the natural gas energy metering through the product of the two.

[0059] It also includes a flow sensor, a pressure sensor and a temperature sensor arranged in the shell 1, and the flow sensor, pressure sensor and temperature sensor are used to collect perception information of natural gas (corresponding to the flow, pressure and temperature information of natural gas respectively), and the collected perception information is transmitted to the data preprocessing module; it also includes a touch screen and a communication module arranged in the shell 1, the touch screen is connected to the data preprocessing module and the energy calculation module respectively, the communication module is connected to the energy calculation module and the data preprocessing module respectively, and the communication module is also connected to a gateway outside the device to realize external communication of the device.

[0060] The instantaneous flow information of natural gas is obtained through the flow sensor and transmitted to the data preprocessing module; the real-time pressure information of natural gas is obtained through the pressure sensor and transmitted to the data preprocessing module; the real-time temperature information of natural gas is obtained through the temperature sensor and transmitted to the data preprocessing module.

[0061] It also includes a calorific value analysis and processing module arranged in the shell 1, the output end of the calorific value analysis and processing module is connected to the data preprocessing module, the input end of the calorific value analysis and processing module is provided with a sample gas processing system and a standard gas processing system, the input end of the sample gas processing system is provided with a sample gas controller, the input end of the sample gas controller is also provided with a sample gas collection interface, the sample gas controller is connected to the air pump 4; the input end of the standard gas processing system is provided with a standard gas collection interface.

[0062] The natural gas sample enters the calorific value analysis and processing module through the sample gas collection interface, the sample gas controller, and the sample gas processing system in turn. The calorific value analysis and processing module calculates the calorific value of the sample gas, obtains the natural gas unit calorific value information corresponding to the standard flow rate of the sample gas, and transmits it to the data preprocessing module.

[0063] The data preprocessing module is used to preprocess the sensed information such as data classification, storage, and transmission; the data preprocessing module is electrically connected to the energy calculation module, the touch display screen, the communication module, and the heat generation analysis and processing module to achieve two-way communication.

[0064] The energy calculation module obtains the natural gas flow, pressure, temperature and other sensory information through the data preprocessing module, calculates the instantaneous operating flow, and realizes the conversion to the instantaneous standard flow and the calculation of the standard flow within the set time period.

[0065] The energy calculation module matches the natural gas unit calorific value corresponding to the standard flow rate through the data preprocessing module, and realizes natural gas energy measurement by multiplying the standard flow rate within a set time period and the natural gas unit calorific value corresponding to the standard flow rate.

[0066] In addition, the standard gas can be collected through the standard gas collection interface and the standard gas processing system and enter the calorific value analysis and processing module. The calorific value analysis and processing module calculates the calorific value of the standard gas and compares the calculation result with the standard value of the calorific value of the standard gas to realize the calibration of the calorific value analysis and processing module.

[0067] The touch screen is electrically connected to the data preprocessing module and the energy calculation module to achieve two-way communication. The data preprocessing module sends information such as the working pressure, temperature, and calorific value of the natural gas to the touch screen, and the energy calculation module sends information such as the working flow rate, standard flow rate, and energy of the natural gas to the touch screen. The touch screen realizes the display and monitoring of the above information at the site. It is also possible to send relevant control instructions to the data preprocessing module and the energy calculation module respectively through on-site operation of the touch screen to adjust the parameters within the authority.

[0068] The data preprocessing module can also send the sensing information such as the operating pressure, temperature, and calorific value of the natural gas directly to the system management platform through the communication module of the device via the sensor network platform, and the management platform can realize remote energy metering and accounting, and realize the synchronous metering of the energy metering device and the management platform.

[0069] The energy metering device of this technical solution adopts an integrated design, and various functional modules are centrally arranged in the housing 1. The parameters of each functional module have good matching and the metering is more accurate, which is not only conducive to improving customer procurement efficiency, but also improves equipment management efficiency.

[0070] At the same time, the use of synchronous calculation methods between various modules can improve the metering efficiency of the metering device, can quickly measure the natural gas energy value, and can also realize the synchronous metering of natural gas energy by the object platform and the management platform.

[0071] Example 2

[0072] like Figures 2 to 9 As shown, on the basis of Example 1, the sample gas collection interface also includes a sampling tube 3 arranged in the shell 1 and connected to the gas pipe 2, and an air pump 4 connected to the sampling tube 3 is also provided on the outer wall of the sampling tube 3, the air pump 4 is connected to the sample gas controller, and the sample gas controller is connected to the sample gas processing system, and a first telescopic member 5 is provided in the sampling tube 3, and the movable end of the first telescopic member 5 is provided with a de-impurity element for discharging the fluid in the sampling tube 3; it also includes a third telescopic member 19 arranged in the shell 1, and the movable end of the third telescopic member 19 is provided with a sealing plate 18 for sealing the gas pipe 2, and a limiting member for fixing the sealing plate 18 is also provided in the gas pipe 2, and when the de-impurity element extends into the gas pipe 2, the limiting member can remove the fixation of the sealing plate 18.

[0073] When measuring the natural gas in the gas pipe, the conventional gas sampling interface uses a connection between the sampling pipe and the gas pipe. When the natural gas in the gas pipe needs to be collected, the gas pump is used to generate suction in the sampling pipe to suck the natural gas in the gas pipe into the sampling pipe for subsequent energy analysis. However, when sampling the natural gas in different time periods, part of the sample gas collected in the previous time period will always remain in the sampling pipe, resulting in the natural gas collected in the two time periods being mixed together when the natural gas in the gas pipe is collected again in the next time period. This causes an error in measuring the energy value of the natural gas in this period. For this reason, the present technical solution provides a first telescopic member 5 and a de-impurity element in the existing sampling tube 3. When the first telescopic member 5 moves along the axial direction of the sampling tube 3 in the sampling tube 3, it can drive the de-impurity element to move in the sampling tube 3, thereby discharging the natural gas remaining in the sampling tube 3 collected in the previous period into the gas pipe 2, thereby achieving the purpose of removing impurities in the sampling tube 3. This ensures that the natural gas collected in the sampling tube 3 in this period will not contain the remaining natural gas from the previous period, thereby ensuring that the energy value of the natural gas measured in this period is more accurate.

[0074] At the same time, when actually collecting the natural gas in the gas pipe 2, the natural gas in the gas pipe 2 is in a flowing state. When the natural gas flow rate in the gas pipe 2 is fast, the span of the natural gas collected before and after a certain period of time is large, and it is impossible to accurately reflect the reasonable energy value of the gas pipe in this period of time. For this reason, the technical solution is also provided with a sealing plate 18 for sealing the gas pipe 2 in the shell. When the natural gas in the sampling tube 3 of the previous period of time is discharged into the gas pipe 2 by the provided impurity removal element, the impurity removal element is extended into the gas pipe 2, and the impurity removal element can remove the limiter from the sealing plate 18. The constraint allows the third telescopic member 19 to drive the sealing plate 18 to be inserted into the gas pipe 2 and seal the gas pipe 2, so that the natural gas in the gas pipe 2 stops flowing under the action of the sealing plate 18. Therefore, in the subsequent process of collecting the natural gas in the gas pipe 2, it can be ensured that the span of the collected natural gas is not large, thereby ensuring that the natural gas collected during this period is within a reasonable range, avoiding the large interval between the natural gas collected before and after due to the natural gas flowing in the gas pipe 2, and ultimately resulting in the natural gas energy value measured during this period being inaccurate.

[0075] Furthermore, a fixed rod 8 is provided in the sampling tube 3, one end of the fixed rod 8 extends into the first telescopic member 5, and the other end can extend into the gas pipe 2; the impurity removal element includes a first movable block 7 and a second movable block 10 whose outer diameters match the inner diameter of the sampling tube 3, the first movable block 7 and the second movable block 10 are both sleeved on the fixed rod 8, and the movable end of the first telescopic member 5 is connected to the first movable block 7; the fixed rod 8 is also provided with an exhaust hole 9 for discharging the fluid in the sampling tube 3, and when the first movable block 7 moves toward the second movable block 10, the exhaust hole 9 can be opened.

[0076] In the present technical solution, a first movable block 7 and a second movable block 10 are arranged in the existing sampling tube 3. Both the first movable block 7 and the second movable block 10 can move in the sampling tube 3 along the axial direction of the sampling tube 3. In addition, a fixed rod 8 is arranged in the sampling tube 3, which is slidably connected to the first movable block 7 and the second movable block 10 respectively. An exhaust hole 9 for discharging the fluid in the sampling tube 3 is also arranged on the fixed rod 8. When it is necessary to collect the natural gas in the gas pipe 2 during the period, the first movable block 7 is first moved toward the second movable block 10. Since the outer diameter of the first movable block 7 is consistent with the inner diameter of the sampling tube 3, the first movable block 7 can compress the natural gas remaining in the sampling tube 3 in the previous period during the movement. At the same time, the exhaust hole 9 on the fixed rod 8 is in an open state. Therefore, when the first movable block 7 compresses the natural gas remaining in the sampling tube 3, it can quickly discharge it from the exhaust hole 9 into the gas pipe 2, thereby achieving the purpose of discharging the natural gas remaining in the sampling tube 3 during the natural gas collection process in the previous period.

[0077] When collecting the natural gas in the gas pipe 2, since the fixed rod 8 is able to move along its axial direction in the sampling tube 3, the first movable block 7 and the second movable block 10 are brought together to exhaust all the natural gas remaining in the sampling tube 3, and then the first movable block 7 and the second movable block 10 located close together on the fixed rod 8 are extended into the gas pipe 2 by using the fixed rod 8, and then the first movable block 7 is withdrawn into the sampling tube 3. In the process of the first movable block 7 being withdrawn into the sampling tube 3, the negative pressure generated can suck the natural gas in the gas pipe 2 during this period into the sampling tube 3, thereby realizing the rapid collection of the natural gas during this period. At the same time, after the collection of the natural gas during this period is completed, the second movable block 10 is also withdrawn into the sampling tube 3 to seal the pipe mouth of the sampling tube 3, thereby ensuring that the natural gas of different periods can be accurately collected in the sampling tube 3, so that the energy value of the natural gas measured in each period is more accurate.

[0078] It also includes a first telescopic member 5 arranged in the sampling tube 3, one end of the first telescopic member 5 is connected to the inner wall of the shell 1, and the other end is connected to the first movable block 7 along the axial direction of the sampling tube 3; the fixing rod 8 is inserted into the first telescopic member 5 along the axial direction of the first telescopic member 5.

[0079] The first telescopic member 5 is used to drive the first movable block 7 to move normally in the sampling tube 3 .

[0080] A second telescopic member 15 is also provided inside the first telescopic member 5, one end of the second telescopic member 15 is connected to the inner top surface of the first telescopic member 5, and the other end is connected to the fixed rod 8; the first telescopic member 5, the second telescopic member 15 and the third telescopic member 19 are all bellows, the first telescopic member 5 is connected to the third telescopic member 19 through the connecting pipe 24, and the first telescopic member 5 and the second telescopic member 15 are respectively connected to the pump body through the air pipe.

[0081] The second telescopic member 15 is used to drive the normal movement of the fixed rod 8 in the sampling tube 3. The first telescopic member 5 and the second telescopic member 15 in the technical solution both adopt bellows, which are connected to the pump body arranged in the shell through an air pipe. The first telescopic member 5 and the second telescopic member 15 are filled with gas by the pump body. Since the bellows can expand and stretch along its axial direction after being inflated, the first telescopic member 5 and the second telescopic member 15 can respectively realize the adjustment of the positions of the first movable block 7 and the fixed rod 8 in the sampling tube 3.

[0082] At the same time, since the technical solution adopts the connecting pipe 24 to connect the first telescopic member 5 with the third telescopic member 19, in the initial state, when air is ventilated into the first telescopic member 5, the sealing plate 18 is in a locked state. Therefore, the gas entering the first telescopic member 5 can preferentially force the first telescopic member 5 to collide in the sampling tube 3, drive the first movable block 7 to move in the sampling tube 3, and discharge the natural gas remaining in the previous period. When the fixed rod 8, the first movable block 7 and the second movable block 10 are extended into the gas pipe 2 together, the constraint of the limiting member on the sealing plate 18 is removed, so that the gas filled into the first telescopic member 5 enters the third telescopic member 19 through the connecting pipe 24, forcing the third telescopic member 19 to collide and stretch along its axial direction, and pushes the sealing plate 18 into the gas pipe 2, so as to achieve the blocking of the gas pipe 2 and block the natural gas in the gas pipe 2, thereby ensuring that the natural gas collected during this period has a large front-to-back span.

[0083] A channel 11 is also provided in the fixing rod 8, one end of the channel 11 is connected to the exhaust hole 9, and the other end is connected to the side wall of the fixing rod 8; a connecting hole with an inner diameter matching the outer diameter of the fixing rod 8 is provided on the second movable block 10, and the fixing rod 8 is inserted into the connecting hole. A first accommodating cavity is provided on the inner wall of the connecting hole, and a first elastic member 12 and a blocking block 13 are provided in the first accommodating cavity. The elastic force generated by the first elastic member 12 can push the blocking block 13 to be inserted into the channel 11 and block the channel 11.

[0084] In order to ensure that when the first telescopic member 5 drives the first movable block 7 to move toward the second movable block 10, the exhaust hole 9 close to the lower end of the fixed rod 8 can be opened, and at the same time, to ensure that the exhaust hole 9 is in a blocked state when the first movable block 7 moves away from the second movable block 10, an inverted "T" structured channel 11 is provided in the fixed rod 8, the upper end of the channel 11 is connected to the exhaust hole 9, and the other two ends of the channel 11 are respectively connected to the two sides of the fixed rod 8, when the blocking block 13 on the inner wall of the connecting hole of the second movable block 10 is flush with the channel 11, under the action of the first elastic member 12, the blocking block 13 is pushed into the channel 11 to block the channel 11, thereby achieving the blocking of the exhaust hole 9.

[0085] When the first movable block 7 moves toward the second movable block 10, the first movable block 7 compresses the natural gas remaining in the sampling tube 3, forcing the natural gas to enter the channel 11 through the exhaust hole 9 and act on the blocking block 13 in the channel 11. As the pressure generated by the first movable block 7 during the movement gradually increases, when the pressure is greater than the elastic force of the first elastic member 12, the blocking block 13 is forced to compress the first elastic member 12 and retract into the first accommodating chamber. At this time, the fixing rod 8 removes the restraining force of the blocking block 13 on it, and the second telescopic member Reference numeral 15 denotes a bellows. When the first movable block 7 moves in the sampling tube 3, the gas pressure generated by the compressed natural gas can force the fixed rod 8 to actively move toward the gas pipe 2, and cause the channel 11 on the fixed rod 8 to be misaligned with the first accommodating cavity, and finally the channels 11 on both sides of the fixed rod 8 are extended into the gas pipe 2, thereby achieving the connection between the gas pipe 2 and the exhaust hole 9, so that the natural gas remaining in the sampling tube 3 can finally enter the gas pipe 2 through the exhaust hole 9 and the channel 11 in sequence, and discharge the gas remaining in the sampling tube 3 in the previous sampling period.

[0086] When the first movable block 7 and the second movable block 10 are brought together, the exhaust hole 9 is blocked under the action of the first movable block 7. At this time, under the action of the second telescopic member 15, the fixed rod 8 can be pulled back to retract. When the channel 11 on the fixed rod 8 is retracted to be flush with the blocking block 13, under the action of the first elastic member 12, the blocking block 13 is reinserted into the channel 11, and the second movable block 10 is re-fixed on the fixed rod 8, ensuring that the exhaust hole 9 is in a closed state.

[0087] A second accommodating cavity is also provided on both sides of the inner wall of the sampling tube 3, and a second elastic member 16 and a limit block 17 are provided in the second accommodating cavity; a third accommodating cavity is provided on both sides of the second movable block 10, and when the third accommodating cavity on the second movable block 10 moves to be flush with the second accommodating cavity, the elastic force generated by the second elastic member 16 can push the limit block 17 to be inserted into the third accommodating cavity.

[0088] In the present technical solution, when the exhaust hole 9 needs to be connected to the gas pipe 2, the second movable block 10 needs to be separated from the fixed rod 8, and the second movable block 10 also needs to be fixed to the inner wall of the sampling tube 3, so as to ensure that the fixed rod 8 can move smoothly on the second movable block 10. Therefore, a second elastic member 16 and a limit block 7 are provided on the inner wall of the sampling tube 3. The elastic force generated by the second elastic member 16 is used to push the limit block 7 to be inserted into the third accommodating cavity of the second movable block 10, thereby realizing the fixation between the second movable block 10 and the sampling tube 3.

[0089] A first unlocking block 23 is provided at the end of the first movable block 7 facing the second movable block 10, and a notch is provided at the end of the first unlocking block 23 facing the second movable block 10, in which a third elastic member 22 and a second unlocking block 21 are provided; a groove 14 is provided on the end face of the second movable block 10 facing the first movable block 7, and the first unlocking block 21 can be inserted into the groove 14, and the groove 14 is connected to the third accommodating cavity; the elastic force of the third elastic member 22 is greater than the elastic force of the second elastic member 16.

[0090] When it is necessary to sample the natural gas in the gas pipe 2, in order to ensure that the second movable block 10 can be smoothly separated from the sampling tube 3, a first unlocking block 23, a third elastic member 22 and a second unlocking block 21 are also provided on the first movable block 7. When the first movable block 7 and the second movable block 10 are brought close to each other, the first unlocking block 23 on the first movable block 7 can be inserted into the groove 14 on the second movable block 10. When the first movable block 7 and the second movable block 10 are completely close to each other, the second unlocking block 21 is flush with the limit block 17, and under the action of the third elastic member 22, the limit block 17 is pushed back into the second accommodating cavity by the second unlocking block 21, so that the constraint of the block 17 on the second movable block 10 is removed, so that the second movable block 10 can smoothly move in the sampling tube 3 following the fixed rod 8.

[0091] The limiting block 17 and the second unlocking block 21 are both conical structures, and the cone tips of the limiting block 17 and the second unlocking block 21 face each other.

[0092] Since the second unlocking block 21 needs to retract the limit block 17 into the second accommodating cavity, when the first movable block 7 moves back in the direction away from the second movable block 10, in order to ensure that the second unlocking block 21 located in the third accommodating cavity can be smoothly moved out of the groove 14 of the second movable block 10, the second unlocking block 21 is set to a conical structure, so that when the second unlocking block 21 moves upward, the conical surface of the second unlocking block 21 is used to force the second unlocking block 21 to retract toward the third elastic member 22, so that the second unlocking block 21 can smoothly pass through the groove 14;

[0093] Similarly, when the first unlocking block 23 on the first movable block 7 is inserted into the groove 14, the upper surface of the second movable block 10 acts on the conical surface of the second unlocking block 21, forcing the second unlocking block 21 to compress the third elastic member 22, thereby smoothly inserting it into the groove 14.

[0094] When the fixed rod 8 drives the second movable block 10 and the first movable block 7 to extend into the gas pipe 2, it is necessary to return the first movable block 7 and the second movable block 10 to the sampling tube 3 in turn. In order to ensure that the first movable block 7 and the second movable block 10 can pass through the limit block 17 smoothly, the limit block 17 is also set to a conical structure, and the second movable block 10 and the first movable block 7 act on the conical surface of the limit block 17, so that the limit block 17 is retracted into the second accommodating cavity.

[0095] In the process of using the first movable block 7 to discharge the natural gas collected in the previous period in the sampling tube 3, when the first movable block 7 and the second movable block 10 are completely close to each other, although the impurities in the sampling tube 3 are completely discharged at this time, a part of the impurities still remain in the exhaust hole 9 and the channel 11, and the impurities in this part cannot be completely discharged. If the channel 11 on the fixed rod 8 is connected, the negative pressure generated during the back movement of the first movable block 7 will preferentially collect the impurities remaining in the exhaust hole 9 and the channel 11 into the sampling tube, affecting the sampling accuracy. For this reason, the technical solution is also provided with a one-way valve (not shown in the figure) in the exhaust hole 9, so that in the process of discharging the impurities in the sampling tube 3, the gas in the sampling tube 3 can only pass through the exhaust hole 9 in sequence through the one-way valve. , channel 11 enters into the gas pipe 2 to discharge the impurities. When it is necessary to collect natural gas, the fixed rod 8 is first moved back, and the channel 11 is re-sealed with the blocking block 13. Then the first movable block 7 and the second movable block 10 are extended into the gas pipe 2 together. Since the blocking block 13 on the second movable block 10 blocks the channel 11 and the one-way valve located at the exhaust hole 9 is used, the channel 11 and the exhaust hole 9 are in a blocked state at this time. Therefore, when the first movable block 7 is retreating into the sampling tube 3, the residual gas in the channel 11 and the exhaust hole 9 cannot be sucked into the sampling tube 3, and the natural gas in the gas pipe 2 during this period is quickly sucked into the sampling tube 3, thereby realizing the rapid sampling of natural gas in a certain period of time.

[0096] In addition, the present technical solution extends the first movable block 7 and the second movable block 10 into the gas pipe 2 together, which, compared with the channel 11, enlarges the diameter of the natural gas entering the gas pipe 3 and improves the efficiency of collecting natural gas.

[0097] At the same time, in the technical solution, when the gas in the pipe 3 is passed into the exhaust hole 9, the blocking block 13 in the channel 11 is forced to retract into the first accommodating chamber under the action of air pressure, so that the fixing rod 8 can be extended into the gas pipe 2, and the channel 11 and the gas pipe 2 are in a connected state. After the exhaust is completed, the fixing rod 8 can move back again, and the blocking block 13 can be used to block the channel 11 on the one hand, and the second movable block 10 can be fixed to the fixing rod 8 again on the other hand, so as to ensure that the subsequent second movable block 10 can be extended into the gas pipe 2 together with the fixing rod 8. The reason why the technical solution adopts the above method is that there are certain solid impurities in the natural gas in some gas pipes 2, such as mud and sand. , rock particles. If the channel 11 is always in communication with the gas pipe 2 during use, after a long time, solid impurities in the natural gas will easily enter the channel 11, which may easily cause the channel 11 to be blocked, making it impossible to discharge the impurities in the sampling tube 3 through the channel 11. Therefore, in the technical solution, when it is necessary to discharge the impurities in the sampling tube 3, the fixed rod 8 can automatically extend into the gas pipe 2 to achieve the connection between the gas pipe 2 and the channel 11. After the impurities are discharged, the fixed rod 8 can be retracted to retract the channel 11 from the gas pipe 2 to the second movable block 10, thereby avoiding the channel 11 being exposed to the gas pipe 2 for a long time, which may easily cause the channel 11 to be blocked.

[0098] The limiting member includes a locking member and an L-shaped connecting plate 26; the gas pipe 2 is a square tube, and a guide hole and a strip opening matching the sealing plate 18 are provided on the gas pipe 2, and the strip opening and the guide hole are both connected to the inside of the gas pipe 2, and the sealing plate 18 can be inserted into the gas pipe 2 through the strip opening and seal the gas pipe 2, and a limiting hole is also provided on the side wall of the sealing plate 18; one end of the connecting plate 26 is connected to the end of the fixing rod 8 facing the gas pipe 2, and the other end can be inserted into the guide hole, and a limiting cavity connected to the guide hole is provided on the inner wall of the strip opening, and the locking member is located in the limiting cavity, and when the connecting plate 26 is inserted into the guide hole, the connecting plate 26 can push the locking member to be inserted into the limiting hole on the sealing plate 18.

[0099] In the initial state, when the fixed rod 8 is not inserted into the gas pipe 2, the L-shaped connecting plate 26 is inserted into the guide hole, forcing the locking member in the limiting cavity to be inserted into the limiting hole on the blocking plate 18, thereby fixing the blocking plate 18; after the fixed rod 8 is inserted into the gas pipe 2, the connecting plate 26 moves together with the fixed rod 8, so that the connecting plate 26 moves out of the limiting hole, thereby removing the restraining force on the blocking plate 18, and enabling the third telescopic member 19 to push the blocking plate 18 to be inserted into the gas pipe 2, thereby blocking the gas pipe 2.

[0100] Furthermore, the locking member includes a first limit block 27, a second limit block 28 and a fourth elastic member 29, the first limit block 27, the second limit block 28 and the fourth elastic member 29 are all located in the limit cavity, and the two ends of the fourth elastic member 29 are respectively connected to the first limit block 27 and the second limit block 28, and the second limit block 28 can be inserted into the limit hole; the square end of the first limit block 27 facing the guide hole is also provided with a bevel.

[0101] Specifically, in the initial state, since the connecting plate 26 is inserted into the guide hole, an extrusion force is generated on the first limit block 27, forcing the first limit block 27 to compress the fourth elastic member 29 and push the second limit block 28 to be inserted into the limit hole of the blocking plate 18, thereby fixing the blocking plate 18; and when the connecting plate 26 moves together with the fixing rod 8 and moves out of the guide hole, under the action of the fourth elastic member 29, it can push the first limit block 27 from the limit cavity to the guide hole, and at the same time pull the second limit block 28 out of the limit hole of the blocking plate 18, thereby removing the constraint on the blocking plate 18; and when When the fixing rod 8 drives the connecting plate 26 to be reinserted into the guide hole, the end of the connecting plate 26 acts on the hypotenuse of the first limit block 27, forcing the first limit block 27 to move from the guide hole back to the limit cavity and apply pressure to the fourth elastic member 29, and the fourth elastic member 29 applies elastic force to the second limit block 28. During the process of the third telescopic member 19 pulling the sealing plate 18 back to the shell 1, when the limit hole on the sealing plate 18 moves to be flush with the second limit block 28, under the action of the fourth elastic member 29, the second limit block 28 is pushed to be reinserted into the limit hole to continue to fix the sealing plate 18.

[0102] A fixing plate 25 is also provided in the shell 1, one end of the third telescopic member 19 is sealedly connected to the fixing plate 25, and the other end is sealedly connected to the sealing plate 18; a placement groove is also provided on the inner wall of the gas pipe 2, and a fifth elastic member 20 is also provided in the placement groove, one end of the fifth elastic member 20 is connected to the inner bottom of the placement groove, and the other end is connected to the end of the sealing plate 18 facing the gas pipe 2.

[0103] The fixing plate 25 is used to fix the third telescopic member 19 to ensure that after the third telescopic member 19 is inflated, the third telescopic member 19 can only be stretched toward the blocking plate 18 .

[0104] In order to improve the response speed of the sealing plate 18, a fifth elastic member 20 is provided. When the limiting member fixes the sealing plate 18, the fifth elastic member 20 is in a stretched state. Therefore, when the limiting member is unlocked, under the action of the fifth elastic member 20, the sealing plate 18 can be pulled to quickly seal the gas pipe 2.

[0105] Example 3

[0106] like Fig.10 As shown, the synchronous computing type natural gas energy metering Internet of Things system includes a user platform, a service platform, a management platform, a sensor network platform and a perception control platform that interact in sequence;

[0107] The perception control platform is the above-mentioned natural gas energy metering device, and the perception control platform transmits the acquired perception information to the management platform through the sensor network platform; the management platform includes an energy metering management system, and the energy metering management system performs comprehensive analysis and processing on the received perception information, transmits user demand information to the user platform through the service platform, and issues control instructions to the perception control platform through the sensor network platform. The specific implementation methods described above further explain in detail the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific implementation method of the present invention, and is not used to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A synchronous calculation type natural gas energy metering device, characterized in that: It comprises a management platform and a housing (1), wherein a data preprocessing module and an energy calculation module are arranged in the housing (1), wherein the data preprocessing module is used to classify and store the sensing information of natural gas and transmit the sensing information to the energy calculation module; The energy calculation module calculates the standard flow rate within a set time period through the sensing information transmitted by the data preprocessing module, and matches the unit calorific value of natural gas corresponding to the standard flow rate through the data preprocessing module, and realizes natural gas energy measurement through the product of the two; The data preprocessing module can transmit the processed information to the management platform, and the management platform can realize remote energy metering and accounting; It also comprises a calorific value analysis and processing module arranged in the housing (1), the output end of the calorific value analysis and processing module is connected to the data preprocessing module, and the input end of the calorific value analysis and processing module is provided with a sample gas processing system and a standard gas processing system; The calorific value analysis and processing module calculates the calorific value of the standard gas after the standard gas processing system removes impurities, and compares the calculation result with the standard value of the calorific value of the standard gas to achieve calibration of the calorific value analysis and processing module; The calorific value analysis and processing module calculates the calorific value of the sample gas after the sample gas processing system removes impurities, and transmits the calculated unit calorific value information of the natural gas corresponding to the standard flow rate to the data preprocessing module; The input end of the sample gas processing system is also provided with a sample gas controller, the input end of the sample gas controller is also provided with a sample gas collection interface, and the input end of the standard gas processing system is also provided with a standard gas collection interface; The sample gas collection interface further comprises a sampling tube (3) arranged in the housing (1) and connected to the gas pipe (2); an air pump (4) connected to the sampling tube (3) is also arranged on the outer wall of the sampling tube (3); a first telescopic member (5) is arranged in the sampling tube (3); a movable end of the first telescopic member (5) is provided with a decontamination element for discharging fluid in the sampling tube (3); The gas pipe (2) further comprises a third telescopic member (19) arranged in the housing (1); a blocking plate (18) for blocking the gas pipe (2) is arranged at a movable end of the third telescopic member (19); a stopper for fixing the blocking plate (18) is also arranged in the gas pipe (2); when the impurity removal element extends into the gas pipe (2), the stopper can remove the fixation of the blocking plate (18); A fixing rod (8) is provided in the sampling tube (3), one end of the fixing rod (8) extends into the first telescopic member (5), and the other end of the fixing rod (8) can extend into the gas pipe (2); The impurity removal element comprises a first movable block (7) and a second movable block (10) whose outer diameters match the inner diameter of the sampling tube (3); the first movable block (7) and the second movable block (10) are both sleeved on the fixed rod (8), and the movable end of the first telescopic member (5) is connected to the first movable block (7); The fixed rod (8) is also provided with an exhaust hole (9) for exhausting the fluid in the sampling tube (3); when the first movable block (7) moves toward the second movable block (10), the exhaust hole (9) can be opened.

2. The synchronous calculation type natural gas energy metering device according to claim 1 is characterized in that: It also includes a flow sensor, a pressure sensor and a temperature sensor arranged in the housing (1), wherein the flow sensor, the pressure sensor and the temperature sensor are used to collect sensing information of natural gas and transmit the collected sensing information to the data preprocessing module; It also includes a touch screen and a communication module arranged in the housing (1), the touch screen being connected to the data preprocessing module and the energy calculation module respectively, and the communication module being electrically connected to the energy calculation module and the data preprocessing module respectively, to achieve two-way communication; The data preprocessing module also transmits the acquired natural gas perception information to the communication module, and the communication module realizes external information interaction.

3. The synchronous calculation type natural gas energy metering device according to claim 1 is characterized in that: A second telescopic member (15) is also provided inside the first telescopic member (5); one end of the second telescopic member (15) is connected to the inner top surface of the first telescopic member (5), and the other end is connected to the fixing rod (8); The first telescopic member (5), the second telescopic member (15) and the third telescopic member (19) are all bellows; the first telescopic member (5) is connected to the third telescopic member (19) via a connecting pipe (24); and the first telescopic member (5) and the second telescopic member (15) are respectively connected to the pump body via air pipes.

4. The synchronous calculation type natural gas energy metering device according to claim 1 is characterized in that: A channel (11) is also provided in the fixing rod (8), one end of the channel (11) is in communication with the exhaust hole (9), and the other end of the channel (11) is in communication with the side wall of the fixing rod (8); The second movable block (10) is provided with a connecting hole whose inner diameter matches the outer diameter of the fixing rod (8), and the fixing rod (8) is inserted into the connecting hole. A first accommodating cavity is provided on the inner wall of the connecting hole, and a first elastic member (12) and a blocking block (13) are provided in the first accommodating cavity. The elastic force generated by the first elastic member (12) can push the blocking block (13) to be inserted into the channel (11) and block the channel (11).

5. The synchronous calculation type natural gas energy metering device according to claim 1 is characterized in that: The limiting member comprises a locking member and an L-shaped connecting plate (26); The gas pipe (2) is a square pipe, and is provided with a guide hole and a strip-shaped opening matching the blocking plate (18), and both the strip-shaped opening and the guide hole are in communication with the interior of the gas pipe (2), and the blocking plate (18) can be inserted into the gas pipe (2) through the strip-shaped opening to block the gas pipe (2), and a limiting hole is also provided on the side wall of the blocking plate (18); One end of the connecting plate (26) is connected to the end of the fixing rod (8) facing the gas pipe (2), and the other end can be inserted into the guide hole. A limiting cavity connected to the guide hole is provided on the inner wall of the strip-shaped opening. The locking piece is located in the limiting cavity. When the connecting plate (26) is inserted into the guide hole, the connecting plate (26) can push the locking piece to be inserted into the limiting hole on the blocking plate (18).

6. The synchronous calculation type natural gas energy metering device according to claim 5 is characterized in that: The locking member comprises a first limiting block (27), a second limiting block (28) and a fourth elastic member (29); the first limiting block (27), the second limiting block (28) and the fourth elastic member (29) are all located in the limiting cavity, and two ends of the fourth elastic member (29) are respectively connected to the first limiting block (27) and the second limiting block (28); the second limiting block (28) can be inserted into the limiting hole; The square end of the first limiting block (27) facing the guide hole is also provided with a beveled edge.

7. The synchronous computing type natural gas energy metering Internet of Things system is characterized by: It includes a user platform, a service platform, a sensor network platform and a perception control platform that interact in sequence; The perception control platform is a natural gas energy metering device as described in any one of claims 1 to 6, and the perception control platform transmits the acquired perception information to the management platform through the sensor network platform; The management platform includes an energy metering management system, which performs comprehensive analysis and processing on the received perception information, transmits user demand information to the user platform through the service platform, and issues control instructions to the perception control platform through the sensor network platform.

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