Differential pressure type flare gas flowmeter

Abstract

The utility model discloses a differential pressure type flare gas flowmeter, and belongs to the technical field of metering equipment. Comprising a ball valve and a flow computer, a measuring head is installed at the bottom end of the ball valve, a height adjusting mechanism is arranged at the upper end of the ball valve, a measuring mechanism is arranged at the upper end of the height adjusting mechanism, the measuring mechanism comprises a three-valve set, and an elevation differential pressure transmitter is installed on one side of the upper end of the three-valve set. A low-range differential pressure transmitter is installed on the other side of the upper end of the three-valve set, a purging valve is installed on one side of the three-valve set, a valve body is installed at the top end of the three-valve set, a temperature transmitter is installed at the upper end of the valve body, the height adjusting mechanism comprises an adjusting seat, the bottom end of the adjusting seat is connected with the upper end of a ball valve, and the lower end of the adjusting seat is connected with the lower end of the ball valve. A connecting pipe is movably inserted into the upper end of the adjusting seat, and the top end of the connecting pipe is connected with the bottom end of the three-valve group; according to the flare gas flow meter, the practicability of the flare gas flow meter can be effectively improved, and the flare gas flow meter has high practical value.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of measuring equipment, concretely to differential pressure torch gas flowmeter. BACKGROUND

[0002] Torch gas is mainly derived from petrochemical chemical industry, and is used for treating combustible organic compounds in process waste gas, excess fuel gas and purge waste gas in the normal production and abnormal production process of enterprise factory that cannot be recovered by device. The generation of torch gas is usually related to the internal leakage of the connected safety valve, bypass valve, automatic regulating valve and the like, overpressure discharge in the production process, purge gas discharge during device start and stop, and emergency discharge in the accident state, wherein, the corresponding equipment is needed to measure the flow of torch gas in the process of conveying.

[0003] Based on the above, the present inventor found that there are the following problems: the current torch gas flowmeter is used, the torch gas discharge is small at ordinary times, and the discharge is large when the production device fails, so that the flow range ratio is very wide, up to nearly 2000:1, and the traditional measurement method is difficult to realize.

[0004] Therefore, in view of the above, the existing structure and defects are improved, and the differential pressure torch gas flowmeter is provided, so as to achieve the purpose of having more practical value. INVENTION CONTENTS

[0005] The utility model discloses a differential pressure torch gas flowmeter, to solve the problem raised in the above background art.

[0006] By adopting the above technical scheme, the full range coverage is realized by adopting the high and low range double difference variable mode, the flow computer automatically switches the differential pressure transmitter according to the collected differential pressure value, so that the discharge of torch gas is accurately measured.

[0007] In view of the above problems, the technical scheme provided by the utility model is:

[0008] The differential pressure torch gas flowmeter comprises a ball valve and a flow computer, the bottom end of the ball valve is provided with a measuring head, the upper end of the ball valve is provided with a height adjusting mechanism, the upper end of the height adjusting mechanism is provided with a measuring mechanism, the measuring mechanism comprises a three-valve group, the upper end of the three-valve group is provided with a high-elevation differential pressure transmitter on one side, the upper end of the three-valve group is provided with a low-elevation differential pressure transmitter on the other side, one side of the three-valve group is provided with a purge valve, the top end of the three-valve group is provided with a valve body, and the upper end of the valve body is provided with a temperature transmitter.

[0009] Further, the height adjusting mechanism comprises an adjusting seat, and the bottom end of the adjusting seat is connected with the upper end of the ball valve.

[0010] The beneficial effect of the further scheme is that the adjusting seat is provided and connected with the upper end of the ball valve, which provides a connection basis for the height adjusting mechanism and a support structure for subsequent height adjustment of the measuring mechanism.

[0011] Further, the upper end of the adjusting seat movably inserts a connecting pipe, and the top end of the connecting pipe is connected with the bottom end of the three-valve group.

[0012] The beneficial effect of the further scheme is that the adjusting seat movably inserts the connecting pipe at the upper end, and the top end of the connecting pipe is connected with the bottom end of the three-valve group, so that the measuring mechanism can adjust the height position on the adjusting seat through the connecting pipe to adapt to different measurement environments and requirements.

[0013] Further, the upper end of the connecting pipe is sleeved with a chuck, and the bottom end of the chuck is fixedly installed with a screw rod on one side.

[0014] The beneficial effect of the further scheme is that the chuck is sleeved on the upper end of the connecting pipe, and the screw rod is fixedly installed on one side of the bottom end of the chuck, which provides a structural basis for the relative position fixation between the connecting pipe and the adjusting seat, and facilitates subsequent locking of the position of the connecting pipe through cooperation of the screw rod and the adjusting seat.

[0015] Further, the screw rod is slidably connected with one side of the upper end of the adjusting seat, and the screw rod is threadedly connected with lock nuts at both upper and lower ends of the adjusting seat.

[0016] The beneficial effect of the further scheme is that the screw rod is slidably connected with one side of the upper end of the adjusting seat, and the screw rod is threadedly connected with lock nuts at both upper and lower ends of the adjusting seat, so that the position of the connecting pipe on the adjusting seat can be fixed by rotating the lock nuts at both upper and lower ends, realizing accurate adjustment and locking of the height of the measuring mechanism and ensuring the stability of the measuring mechanism during measurement.

[0017] Further, the upper end of the measuring head is provided with a plurality of disturbance grooves on the outer side, and the bottom end of the measuring head is provided as a bevel.

[0018] The beneficial effect of the further scheme is that the upper end of the measuring head is provided with a plurality of disturbance grooves on the outer side, which can change the flow state of the torch gas, so that the airflow distribution in the measurement area is more uniform, which is conducive to improving the accuracy of measurement, and the bottom end of the measuring head is provided as a bevel, which helps to reduce the impact of airflow on the measuring head, and also enables the measuring head to better adapt to the flow direction of the torch gas, further improving the measurement accuracy.

[0019] Further, the input and output ends of the flow computer are communicatively connected with the input and output ends of the high-elevation differential pressure transmitter, the low-elevation differential pressure transmitter, and the temperature transmitter.

[0020] The beneficial effect of adopting the above-mentioned further scheme is that the flow computer is connected to the high-range differential pressure transmitter, the low-range differential pressure transmitter and the temperature transmitter, and can acquire the pressure, temperature and other data measured by these transmitters in real time, and analyze and process these data to accurately calculate the flow rate of the flare gas, thereby realizing accurate measurement and monitoring of the flare gas flow rate.

[0021] The beneficial effects of this utility model are as follows: This utility model, through the above-described design, provides a differential pressure flare gas flow meter. This flow meter, by setting up a measuring mechanism, includes a three-valve group within the measuring mechanism used to switch and control the operating states of the high-range and low-range differential pressure transmitters. Under different flow conditions, a differential pressure transmitter with an appropriate range is selected for measurement to ensure measurement accuracy. The high-range and low-range differential pressure transmitters respectively measure the differential pressure generated by the flare gas, acquiring pressure data related to the flow rate. A temperature transmitter at the upper end of the valve body measures the temperature of the flare gas in real time. A purge valve periodically cleans the measuring mechanism. A purging process is performed to remove any accumulated impurities, maintain the cleanliness of the measuring mechanism, and ensure the accuracy and stability of the measurements. The pressure difference data measured by the high-range differential pressure transmitter and the low-range differential pressure transmitter, as well as the temperature data measured by the temperature transmitter, are transmitted in real time to the flow computer via a communication connection. After receiving this data, the flow computer calculates the relevant data. At the same time, the flow computer can determine the flow direction of the flare gas based on the data from the differential pressure transmitter, thereby achieving accurate measurement and monitoring of the flare gas flow rate and displaying the measurement results. This allows operators to view the flow rate, temperature parameters, and flow direction of the flare gas in real time. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the differential pressure flare gas flow meter disclosed in an embodiment of the present invention. Figure 1 ;

[0023] Figure 2 This is a three-dimensional structural diagram of the differential pressure flare gas flow meter disclosed in an embodiment of the present invention. Figure 2 ;

[0024] Figure 3 This is a three-dimensional structural diagram of the differential pressure flare gas flow meter disclosed in an embodiment of the present invention. Figure 3 ;

[0025] Figure 4 This is a front view schematic diagram of the differential pressure flare gas flow meter disclosed in the embodiment of this utility model;

[0026] Figure 5 The differential pressure flare gas flow meter disclosed in this utility model embodiment Figure 2 An enlarged schematic diagram of the A structure.

[0027] In the figure: 100, ball valve; 101, measuring head; 102, height adjusting mechanism; 10201, adjusting seat; 10202, connecting pipe; 10203, chuck; 10204, screw rod; 10205, locking nut; 103, measuring mechanism; 10301, three valve group; 10302, purge valve; 10303, high elevation differential pressure transmitter; 10304, low elevation differential pressure transmitter; 10305, valve body; 10306, temperature transmitter; 104, flow computer; 105, turbulence groove. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0029] Please refer to Figure 1 - Figure 5 The utility model provides a technical scheme: differential pressure type torch gas flowmeter, including ball valve 100 and flow computer 104, the bottom of ball valve 100 is installed with measuring head 101, the upper end of ball valve 100 is equipped with height adjusting mechanism 102, the upper end of height adjusting mechanism 102 is equipped with measuring mechanism 103, and measuring mechanism 103 includes three valve group 10301, the upper end one side of three valve group 10301 is installed with high elevation differential pressure transmitter 10303, the upper end other side of three valve group 10301 is installed with low elevation differential pressure transmitter 10304, one side of three valve group 10301 is installed with purge valve 10302, and the top of three valve group 10301 is installed with valve body 10305, and the upper end of valve body 10305 is installed with temperature transmitter 10306, through setting ball valve 100, measuring head 101, height adjusting mechanism 102, measuring mechanism 103 and flow computer 104, the coordinated work of each component can realize the measurement of torch gas flow, and three valve group 10301, high elevation differential pressure transmitter 10303, low elevation differential pressure transmitter 10304 and temperature transmitter 10306 cooperate with each other, can accurately measure the pressure, temperature and other parameters related to torch gas, and purge valve 10302 can purge and maintain measuring mechanism 103, guaranteeing the accuracy and stability of measurement.

[0030] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0031] Please refer to Figure 1 - Figure 5 The height adjusting mechanism 102 comprises an adjusting seat 10201, the bottom end of the adjusting seat 10201 is connected with the upper end of the ball valve 100, the upper end of the adjusting seat 10201 movably inserts a connecting pipe 10202, the top end of the connecting pipe 10202 is connected with the bottom end of the three-valve group 10301, the upper end of the connecting pipe 10202 is sleeved with a chuck 10203, the bottom end of the chuck 10203 is fixedly installed with a screw rod 10204 on one side, the screw rod 10204 is slidably connected with the upper end of the adjusting seat 10201 on one side, the screw rod 10204 is threadedly connected with a locking nut 10205 on both ends of the adjusting seat 10201, the adjusting seat 10201 is provided and the bottom end thereof is connected with the upper end of the ball valve 100, which provides a connection basis for the height adjusting mechanism 102 and the ball valve 100, and also provides a support structure for subsequent height adjustment of the measuring mechanism 103, the upper end of the adjusting seat 10201 movably inserts the connecting pipe 10202, and the top end of the connecting pipe 10202 is connected with the bottom end of the three-valve group 10301, so that the measuring mechanism 103 can adjust the height position on the adjusting seat 10201 through the connecting pipe 10202 to adapt to different measurement environments and requirements, the chuck 10203 is sleeved on the upper end of the connecting pipe 10202, and the screw rod 10204 is fixedly installed on one side of the bottom end of the chuck 10203, which provides a structural basis for fixing the relative position between the connecting pipe 10202 and the adjusting seat 10201, and facilitates subsequent locking of the position of the connecting pipe 10202 through cooperation of the screw rod 10204 and the adjusting seat 10201, the screw rod 10204 is slidably connected with the upper end of the adjusting seat 10201 on one side, and the locking nut 10205 is threadedly connected on both ends of the adjusting seat 10201 on the screw rod 10204, the position of the connecting pipe 10202 on the adjusting seat 10201 can be fixed by rotating the locking nuts 10205 on both ends, and the height of the measuring mechanism 103 is accurately adjusted and locked, and the stability of the measuring mechanism 103 in the measurement process is ensured.

[0032] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0033] Please refer to Figure 1 Figure 5 The upper end of the measuring head 101 is provided with a plurality of spoiler grooves 105, the bottom end of the measuring head 101 is provided as an inclined surface, the input and output ends of the flow computer 104 are in communication connection with the input and output ends of the high-elevation differential pressure transmitter 10303, the low-elevation differential pressure transmitter 10304 and the temperature transmitter 10306, the upper end of the measuring head 101 is provided with a plurality of spoiler grooves 105, which can change the flow state of the flare gas, make the airflow distribution in the measurement area more uniform, and be beneficial to improve the accuracy of measurement, the bottom end of the measuring head 101 is provided as an inclined surface, which is helpful to reduce the impact of airflow on the measuring head 101, and at the same time can also make the measuring head 101 better adapt to the flow direction of the flare gas, further improve the measurement accuracy, the flow computer 104 is in communication connection with the high-elevation differential pressure transmitter 10303, the low-elevation differential pressure transmitter 10304 and the temperature transmitter 10306, which can obtain the pressure, temperature and other data measured by these transmitters in real time, and analyze and process these data, so as to accurately calculate the flow of the flare gas, realize accurate measurement and monitoring of the flare gas flow.

[0034] ​Specifically, the working principle of the differential pressure flare gas flowmeter is as follows: when in use, the ball valve 100 serves to control the entry of flare gas into the flowmeter; when measurement is needed, the ball valve 100 is opened, the flare gas enters the measurement area through the measuring head 101, the height adjustment mechanism 102 can adjust the height of the measurement mechanism 103 according to the actual measurement environment and requirements, the bottom end of the adjusting seat 10201 is connected to the upper end of the ball valve 100 to provide stable support, the connecting pipe 10202 is movably inserted into the upper end of the adjusting seat 10201, the top end of the connecting pipe 10202 is connected to the bottom end of the three-valve group 10301, the height of the measurement mechanism 103 is adjusted and locked through the cooperation of the chuck 10203, the screw rod 10204 and the locking nut 10205, so as to ensure that the measurement mechanism 103 can be in the best measurement position, the turbulence groove 105 on the outer side of the upper end of the measuring head 101 changes the flow state of the flare gas, so that the airflow in the measurement area is more uniform, the inclined surface at the bottom end reduces the impact of the airflow on the measuring head 101 and better adapts to the airflow direction, the three-valve group 10301 in the measurement mechanism 103 is used to switch and control the working state of the high-range differential pressure transmitter 10303 and the low-range differential pressure transmitter 10304, in different flow conditions, the differential pressure transmitter with the appropriate range is selected for measurement to ensure the measurement accuracy, the high-range differential pressure transmitter 10303 and the low-range differential pressure transmitter 10304 measure the differential pressure generated by the flare gas respectively to obtain pressure data related to the flow, the temperature transmitter 10306 at the upper end of the valve body 10305 measures the temperature of the flare gas in real time, the purge valve 10302 periodically purges the measurement mechanism 103 to remove possible accumulated impurities, maintain the cleanliness of the measurement mechanism 103, and ensure the accuracy and stability of the measurement, the pressure difference data measured by the high-range differential pressure transmitter 10303 and the low-range differential pressure transmitter 10304 and the temperature data measured by the temperature transmitter 10306 are transmitted in real time to the flow computer 104 through the communication connection, after receiving these data, the flow computer 104 calculates the related data, at the same time, the flow computer 104 can determine the flow direction of the flare gas according to the data of the differential pressure transmitter, realize accurate measurement and monitoring of the flare gas flow, and display the measurement results, so that the operator can view the flow, temperature parameters and flow direction state of the flare gas in real time.

[0035] It should be noted that the differential pressure flare gas flowmeter, the model of the flow computer 104 is FC2000-IAD, and the calculation method adopts the existing technology in the art, so it will not be described in detail.

Claims

1. A differential pressure flare gas flow meter characterized by, Including ball valve (100) and flow computer (104), the bottom end of the ball valve (100) is provided with a measuring head (101), the upper end of the ball valve (100) is provided with a height adjusting mechanism (102), the upper end of the height adjusting mechanism (102) is provided with a measuring mechanism (103), the measuring mechanism (103) comprises a three valve group (10301), the upper end of the three valve group (10301) is provided with an elevation difference pressure transmitter (10303) on one side, the upper end of the three valve group (10301) is provided with a low elevation difference pressure transmitter (10304) on the other side, one side of the three valve group (10301) is provided with a purge valve (10302), the top of the three valve group (10301) is provided with a valve body (10305), the upper end of the valve body (10305) is provided with a temperature transmitter (10306).

2. The differential pressure flare gas flow meter of claim 1, wherein, The height adjusting mechanism (102) comprises an adjusting seat (10201), and the bottom end of the adjusting seat (10201) is connected with the upper end of the ball valve (100).

3. The differential pressure flare gas flow meter of claim 2, wherein, The upper end of the adjusting seat (10201) movably inserts a connecting pipe (10202), and the top end of the connecting pipe (10202) is connected with the bottom end of the three valve group (10301).

4. The differential pressure flare gas flow meter of claim 3, wherein, The upper end of the connecting pipe (10202) is provided with a chuck (10203), and the bottom end of the chuck (10203) is fixedly provided with a screw rod (10204) on one side.

5. The differential pressure flare gas flow meter of claim 4, wherein, The screw rod (10204) is slidably connected with one side of the upper end of the adjusting seat (10201), and the screw rod (10204) is threadedly connected with a locking nut (10205) on the upper end and the lower end of the adjusting seat (10201).

6. The differential pressure flare gas flow meter of claim 1 wherein, The upper end of the measuring head (101) is provided with a plurality of disturbance grooves (105) on the outer side, and the bottom end of the measuring head (101) is provided as an inclined surface.

7. The differential pressure flare gas flow meter of claim 1 wherein, The input and output ends of the flow computer (104) are in communication connection with the input and output ends of the elevation difference pressure transmitter (10303), the low elevation difference pressure transmitter (10304) and the temperature transmitter (10306).

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