Condensation drainage equipment capable of preventing positive pressure side and negative pressure side from carrying water

Abstract

The utility model discloses condensation drainage equipment capable of preventing water from being carried on positive and negative pressure sides. The condensation drainage equipment comprises an orifice plate flowmeter, a condensation tank, a blow-down valve, an integrated three-valve group and a differential pressure transmitter, the orifice plate flowmeter is arranged on the measuring pipeline, a positive pressure tapping opening and a negative pressure tapping opening of the orifice plate flowmeter are connected with the first condensation tank and the second condensation tank through a first front pressure guide pipe and a second front pressure guide pipe respectively, and the first condensation tank and the second condensation tank are connected with a first blow-off pipe and a second blow-off pipe respectively. A first blow-down valve and a second blow-down valve are respectively arranged on the first blow-down pipe and the second blow-down pipe; the first blow-off pipe and the second blow-off pipe are respectively connected with a positive pressure tapping port and a negative pressure tapping port of the integrated three-valve group through a first rear pressure guide pipe and a second rear pressure guide pipe, and the integrated three-valve group is connected with the differential pressure transmitter. The device has the advantages that the accuracy of pressure measurement is ensured under the condition that the positive and negative pressure side pressure sampling is normal, and the measurement result is prevented from being influenced by medium water.

Description

Technical Field

[0001] The utility model relates to the technical field of differential pressure measuring instruments, in particular to condensation drainage equipment for preventing positive and negative pressure sides from carrying water. Background Art

[0002] Differential pressure measuring instruments are widely used in petroleum, chemical, electric power, metallurgy and other industries. They are mainly used to measure the differential pressure, pressure and negative pressure of liquid, gas and steam. They can also measure the liquid level of open or pressurized containers. With a throttling device, they can measure the flow of liquid, gas or steam. The differential pressure transmitter is a typical self-balancing detection instrument. Its main function is to measure the pressure difference of the medium in the process pipeline or tank, and convert the measured differential pressure value into a current signal output through data conversion.

[0003] At present, the positive and negative pressure ports of the orifice flowmeter installed on the measuring pipeline are usually directly connected to the positive and negative pressure ports of the three-valve group, and then connected to the differential pressure transmitter. When the differential pressure transmitter measures gas flow, especially gas media that are greatly affected by temperature, when the temperature is low in winter, water will enter the pressure pipe, and the pressure on the positive and negative pressure sides will be affected by the water. The pressure measurement is inaccurate, which not only leads to inaccurate flow and the displayed value has no reference value, but also requires frequent manual recalibration on site, which increases the workload of personnel. Utility Model Content

[0004] The purpose of the utility model is to provide a condensation drainage device that avoids water from being carried on the positive and negative pressure sides, thereby solving the above-mentioned problems existing in the prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A condensation drainage device for preventing water from being carried on the positive and negative pressure sides, comprising an orifice flowmeter, a condensate tank, a drain valve, an integrated three-valve group and a differential pressure transmitter; the orifice flowmeter is arranged on a measuring pipeline, the positive pressure port and the negative pressure port of the orifice flowmeter are connected to the first condensate tank and the second condensate tank via a first front pressure pipe and a second front pressure pipe respectively, the first condensate tank and the second condensate tank are connected with a first drain pipe and a second drain pipe respectively, the first drain pipe and the second drain pipe are provided with a first drain valve and a second drain valve respectively; the first drain pipe and the second drain pipe are connected to the positive pressure port and the negative pressure port of the integrated three-valve group via a first rear pressure pipe and a second rear pressure pipe respectively, and the integrated three-valve group is connected to the differential pressure transmitter.

[0007] Preferably, a connection point between the first rear pressure-guiding pipe and the first sewage pipe is located between the first sewage valve and the first condensation tank.

[0008] Preferably, a connection point between the second rear pressure guiding pipe and the second sewage pipe is located between the second sewage valve and the second condensation tank.

[0009] Preferably, a front needle valve is provided on each of the first front pressure-conducting pipe and the second front pressure-conducting pipe.

[0010] Preferably, a rear needle valve is provided on each of the first rear pressure guiding pipe and the second rear pressure guiding pipe.

[0011] The beneficial effects of the utility model are: 1. It ensures the accuracy of pressure measurement when the pressure on the positive and negative pressure sides is normal, and avoids the measurement result being affected by water in the medium. 2. It avoids the phenomenon of long-term water in the three-valve group in winter, reduces unnecessary manpower waste, ensures the accuracy of flow data, and thus enables the equipment to operate stably and achieve the goal of safe production. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of the condensation drainage equipment in the embodiment of the utility model.

[0013] In the figure: 1. Orifice flowmeter; 2. First condensate tank; 3. Second condensate tank; 4. Front needle valve; 5. First sewage valve; 6. Second sewage valve; 7. Rear needle valve; 8. Integrated three-valve group; 9. Differential pressure transmitter; 10. Measuring pipeline. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation methods described here are only used to explain the utility model and are not used to limit the utility model.

[0015] like Figure 1 As shown, in this embodiment, a condensation drainage device for avoiding water on the positive and negative pressure sides is provided, including an orifice flowmeter 1, a condensate tank, a drain valve, an integrated three-valve group 8 and a differential pressure transmitter 9; the orifice flowmeter 1 is arranged on a measuring pipeline 10, and the positive pressure port and the negative pressure port of the orifice flowmeter 1 are connected to the first condensate tank 2 and the second condensate tank 3 via a first front pressure pipe and a second front pressure pipe, respectively, the first condensate tank 2 and the second condensate tank 3 are connected with a first drain pipe and a second drain pipe, respectively, and the first drain pipe and the second drain pipe are provided with a first drain valve 5 and a second drain valve 6, respectively; the first drain pipe and the second drain pipe are connected to the positive pressure port and the negative pressure port of the integrated three-valve group 8 via a first rear pressure pipe and a second rear pressure pipe, respectively, and the integrated three-valve group 8 is connected to the differential pressure transmitter 9.

[0016] In this embodiment, the connection point between the first rear pressure-conducting pipe and the first sewage pipe is located between the first sewage valve 5 and the first condensation tank 2. The connection point between the second rear pressure-conducting pipe and the second sewage pipe is located between the second sewage valve 6 and the second condensation tank 3.

[0017] In this embodiment, the first front pressure pipe and the second front pressure pipe are respectively provided with a front needle valve 4. The corresponding front needle valve 4 controls the on-off of the first front pressure pipe and the second front pressure pipe respectively.

[0018] In this embodiment, the first rear pressure-conducting pipe and the second rear pressure-conducting pipe are respectively provided with a rear needle valve 7. The corresponding rear needle valve 7 controls the opening and closing of the first rear pressure-conducting pipe and the second rear pressure-conducting pipe respectively.

[0019] In this embodiment, by setting a condensation tank and a drain valve between the orifice flowmeter 1 and the integrated three-valve group 8, if the medium contains water, the water will condense into water in the condensation tank, and it is only necessary to open the drain valve regularly to drain the water. During the drainage process, the needle valve on the corresponding pipeline is closed to prevent water from flowing into the corresponding pressure pipe and affecting the measurement accuracy.

[0020] By adopting the above technical solution disclosed in the utility model, the following beneficial effects are obtained:

[0021] The utility model provides a condensation drainage device that avoids water on the positive and negative pressure sides, ensures the accuracy of pressure measurement when the pressure on the positive and negative pressure sides is normal, and avoids the measurement result being affected by water in the medium. It avoids the phenomenon of long-term water in the three-valve group in winter, reduces unnecessary manpower waste, ensures the accuracy of flow data, and thus enables the equipment to operate stably and achieve the goal of safe production.

[0022] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications should also be considered as the protection scope of the present invention.

Claims

1. A condensation drainage device for preventing water from being carried on the positive and negative pressure sides, characterized in that: It includes an orifice flowmeter, a condensate tank, a drain valve, an integrated three-valve group and a differential pressure transmitter; the orifice flowmeter is arranged on the measuring pipeline, the positive pressure port and the negative pressure port of the orifice flowmeter are connected to the first condensate tank and the second condensate tank through the first front pressure pipe and the second front pressure pipe respectively, the first condensate tank and the second condensate tank are connected with the first drain pipe and the second drain pipe respectively, the first drain pipe and the second drain pipe are respectively provided with the first drain valve and the second drain valve; the first drain pipe and the second drain pipe are respectively connected to the positive pressure port and the negative pressure port of the integrated three-valve group through the first rear pressure pipe and the second rear pressure pipe, and the integrated three-valve group is connected to the differential pressure transmitter; The connection point between the first rear pressure-conducting pipe and the first sewage pipe is located between the first sewage valve and the first condensation tank; the connection point between the second rear pressure-conducting pipe and the second sewage pipe is located between the second sewage valve and the second condensation tank; The first front pressure-conducting pipe and the second front pressure-conducting pipe are respectively provided with a front needle valve; the first rear pressure-conducting pipe and the second rear pressure-conducting pipe are respectively provided with a rear needle valve.

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