A pipeline pressure monitoring device interlocked with a solenoid valve

Abstract

The patent discloses a pipeline pressure monitoring device connected with an electromagnetic valve, which comprises a pressure transmitter, an intelligent terminal and an electromagnetic valve, the pressure transmitter and the electromagnetic valve are both installed on an external natural gas pipeline, the pressure monitoring end of the pressure transmitter is located in the inside of the external natural gas pipeline, the electromagnetic valve can control the on-off of the external natural gas pipeline, the pressure transmitter and the electromagnetic valve are both electrically connected with the intelligent terminal, the outer side wall of the pressure transmitter is installed with a fixing nut, the lower wall of the fixing nut is installed with a locking mechanism, the locking mechanism can be attached to the side wall of the external natural gas pipeline, the device can collect the pipeline natural gas pressure in real time through the setting of the pressure transmitter, and the pressure value is transmitted to the intelligent terminal in the form of an analog signal, the intelligent terminal can analyze and judge the received pressure signal, and the electromagnetic valve can be controlled to execute emergency cut-off through the on-off of the power supply line, so that the production safety is ensured.

Description

Technical Field

[0001] This patent relates to the field of natural gas pressure monitoring technology, specifically a pipeline pressure monitoring device interlocked with a solenoid valve. Background Technology

[0002] In industrial and commercial enterprises, natural gas combustion devices, such as boilers and kilns, are frequently used. These combustion devices have specific requirements for the natural gas supply pressure. When the natural gas supply pressure exceeds the specified range, the combustion device may not function properly, or it may cause serious safety accidents.

[0003] Therefore, a device is needed that can monitor the gas supply pressure of the combustion device in real time and interlock the solenoid valve on the gas pipeline when the gas supply pressure exceeds the specified range, so that the solenoid valve can urgently cut off the downstream gas supply pipeline pressure monitoring device to ensure production safety. Utility Model Content

[0004] The purpose of this patent is to provide a pipeline pressure monitoring device that is interlocked with a solenoid valve, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this patent provides the following technical solution: a pipeline pressure monitoring device interlocked with a solenoid valve, comprising a pressure transmitter, a smart terminal and a solenoid valve, wherein the pressure transmitter and the solenoid valve are both installed on an external natural gas pipeline, the pressure monitoring end of the pressure transmitter is located inside the external natural gas pipeline, the solenoid valve can control the opening and closing of the external natural gas pipeline, and the pressure transmitter and the solenoid valve are both electrically connected to the smart terminal.

[0006] The pressure transmitter has an external thread on the outer side of its detection end, and a threaded hole is provided on the side wall of the external natural gas pipeline. The pressure transmitter is screwed into the threaded hole by the thread. A fixing nut is installed on the outer side wall of the pressure transmitter, and a locking mechanism is installed on the lower wall of the fixing nut. The locking mechanism can fit against the side wall of the external natural gas pipeline.

[0007] Preferably, the locking mechanism includes a through hole, a support screw, and a sealing washer. The through hole is formed on the upper wall of the fixing nut and extends through the lower wall of the fixing nut. The through hole has an internal thread. The support screw is screwed into the through hole and can fit against the side wall of the external natural gas pipeline. The sealing washer is fitted against the lower wall of the fixing nut.

[0008] Preferably, the outer side wall of the support screw is provided with an annular groove, a rotating sleeve is sleeved on the outer side wall of the support screw, and a positioning protrusion is installed on the inner side wall of the rotating sleeve, the positioning protrusion being inserted into the annular groove.

[0009] Preferably, a rotating handle is installed on the outer side of the upper end of the support screw located on the fixing nut, and a rubber sleeve is installed on the lower end of the support screw located on the fixing nut, the rubber sleeve being able to fit against the side wall of the external natural gas pipeline.

[0010] Preferably, a sponge cushioning sleeve is fitted onto the outer side of the rotating sleeve.

[0011] Preferably, the transmission line of the pressure transmitter is fitted with a spiral protective sleeve.

[0012] Compared with existing technologies, the beneficial effects of this patent are:

[0013] This device uses a pressure transmitter to collect the pressure of pipeline natural gas in real time and transmits the pressure value as an analog signal to a smart terminal. The smart terminal analyzes and judges the received pressure signal. When the received pressure value is within the preset range, the smart terminal does not react. When the received pressure value exceeds the preset range, the smart terminal controls the on / off of the power supply line of the solenoid valve to make the solenoid valve perform an emergency shut-off to ensure production safety.

[0014] In addition, the device is equipped with a locking mechanism on the fixing nut to ensure the stability of the pressure transmitter installation and prevent loosening. A rotating sleeve is also provided on the outside of the support screw to protect the pressure transmitter and prevent external objects from directly impacting it. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the installation of this patent.

[0016] Figure 2 This is a schematic diagram of the principle of this patent.

[0017] Figure 3 This is a schematic diagram of the pressure transmitter structure of this patent.

[0018] Figure 4 This is a schematic diagram of the locking mechanism structure of this patent.

[0019] In the diagram: 1 Pressure transmitter, 2 Smart terminal, 3 Solenoid valve, 4 Fixing nut, 5 Locking mechanism, 51 Through hole, 52 Support screw, 53 Sealing gasket, 6 Annular groove, 7 Rotating sleeve, 8 Positioning convex ring, 9 Rotating handle, 10 Rubber sleeve, 11 Sponge buffer sleeve, 12 Spiral protective sleeve. Detailed Implementation

[0020] The technical solutions of this patent embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this patent, and not all of them. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0021] Please see Figure 1-4 This patent provides a technical solution: a pipeline pressure monitoring device interlocked with a solenoid valve, including a pressure transmitter 1, a smart terminal 2 and a solenoid valve 3. The pressure transmitter 1 and the solenoid valve 3 are both installed on an external natural gas pipeline. The pressure monitoring end of the pressure transmitter 1 is located inside the external natural gas pipeline. The solenoid valve 3 can control the opening and closing of the external natural gas pipeline. The pressure transmitter 1 and the solenoid valve 3 are both electrically connected to the smart terminal 2.

[0022] The pressure transmitter 1, intelligent terminal 2, and solenoid valve 3 proposed in this paper are all existing technologies. The pressure transmitter 1 is installed on the pipeline to collect natural gas pressure in real time and convert the physical pressure signal into a standard analog signal. The intelligent terminal 2 is an industrial-grade PLC used to receive analog signals, perform signal conditioning, analog-to-digital conversion (A / D conversion), and data processing. It has built-in pressure threshold judgment logic. The solenoid valve 3 is installed at the pipeline valve and receives instructions from the intelligent terminal 2 to execute fully open, fully close, or regulating actions to achieve emergency shut-off or flow control.

[0023] When selecting the model of the three, the normal pressure range of the pipeline needs to be determined for pressure transmitter 1, and a 20% overload capacity should be reserved. At the same time, pressure transmitter 1 also needs to meet explosion-proof standards such as ExdIICT6.

[0024] When selecting Smart Terminal 2, Smart Terminal 2 needs to use an ADC chip with more than 16 bits to ensure that the pressure resolution is high enough.

[0025] Pressure transmitter 1 collects the pipeline natural gas pressure in real time and transmits the pressure value to intelligent terminal 2 as an analog signal. Intelligent terminal 2 analyzes and judges the received pressure signal. When the received pressure value is within the preset range, intelligent terminal 2 does not react. When the received pressure value exceeds the preset range, intelligent terminal 2 controls the on / off of the power supply line of solenoid valve 3 to make solenoid valve 3 perform emergency shut-off to ensure production safety.

[0026] The outer side of the detection end of the pressure transmitter 1 is provided with an external thread, and the side wall of the external natural gas pipeline is provided with a threaded hole. The pressure transmitter 1 is screwed into the threaded hole by the thread. A fixing nut 4 is installed on the outer side wall of the pressure transmitter 1, and a locking mechanism 5 is installed on the lower wall of the fixing nut 4. The locking mechanism 5 can fit against the side wall of the external natural gas pipeline.

[0027] The locking mechanism 5 can improve the stability of the pressure transmitter 1 installation, prevent the pressure transmitter 1 from becoming loose, and prevent natural gas leakage and safety accidents.

[0028] Specifically, the locking mechanism 5 includes a through hole 51, a support screw 52, ​​and a sealing washer 53. The through hole 51 is opened on the upper wall of the fixing nut 4 and passes through the lower wall of the fixing nut 4. The through hole 51 is provided with an internal thread. The support screw 52 is screwed into and installed in the through hole 51. The support screw 52 can fit against the side wall of the external natural gas pipeline. The sealing washer 53 is fitted against the lower wall of the fixing nut 4.

[0029] Multiple through holes 51 are provided on the fixing nut 4, so that after the pressure transmitter 1 is tightened, the support screw 52 at an appropriate position can be rotated to make the lower end of the support screw 52 fit against the side wall of the external pipeline, thereby limiting the pressure transmitter 1 and preventing it from loosening.

[0030] Meanwhile, the sealing gasket 53 allows it to seal the connection between the pressure transmitter 1 and the external pipeline after the pressure transmitter 1 is tightened.

[0031] Specifically, an annular groove 6 is provided on the outer side wall of the support screw 52, ​​a rotating sleeve 7 is sleeved on the outer side wall of the support screw 52, ​​and a positioning protrusion 8 is installed on the inner side wall of the rotating sleeve 7. The positioning protrusion 8 is inserted into the annular groove 6.

[0032] By setting a rotating sleeve 7, it can shield and protect the outside of the pressure transmitter 1. When an external object moves toward the pressure transmitter 1, the rotating sleeve 7 will first contact the object, thereby protecting the pressure transmitter 1. At the same time, the rotating sleeve 7 can rotate, which can guide the object to the side to a certain extent and reduce the impact force.

[0033] Specifically, a rotating handle 9 is installed on the outer side of the upper end of the support screw 52 located on the fixing nut 4, and a rubber sleeve 10 is installed on the lower end of the support screw 52 located on the fixing nut 4. The rubber sleeve 10 can fit against the side wall of the external natural gas pipeline.

[0034] The rubber sleeve 10 can protect the external natural gas pipeline and prevent the support screw 52 from making hard contact with the pipeline.

[0035] Specifically, a sponge buffer sleeve 11 is fitted onto the outer side of the rotating sleeve 7;

[0036] The sponge cushioning sleeve 11 can provide some cushioning when an external object impacts it.

[0037] Specifically, a spiral protective sleeve 12 is fitted around the transmission line of the pressure transmitter 1.

[0038] Working principle: Pressure transmitter 1 collects the pipeline natural gas pressure in real time and transmits the pressure value as an analog signal to intelligent terminal 2. Intelligent terminal 2 analyzes and judges the received pressure signal. When the received pressure value is within the preset range, intelligent terminal 2 does not react. When the received pressure value exceeds the preset range, intelligent terminal 2 controls the on / off of the power supply line of solenoid valve 3 to make solenoid valve 3 perform emergency shut-off to ensure production safety.

[0039] It will be apparent to those skilled in the art that this patent is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this patent. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this patent is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this patent. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pipeline pressure monitoring device interlocked with a solenoid valve, comprising a pressure transmitter (1), a smart terminal (2), and a solenoid valve (3), characterized in that: The pressure transmitter (1) and the solenoid valve (3) are both installed on the external natural gas pipeline. The pressure monitoring end of the pressure transmitter (1) is located inside the external natural gas pipeline. The solenoid valve (3) can control the opening and closing of the external natural gas pipeline. The pressure transmitter (1) and the solenoid valve (3) are both electrically connected to the smart terminal (2). The pressure transmitter (1) has an external thread on the outer side of its detection end, and a threaded hole is provided on the side wall of the external natural gas pipeline. The pressure transmitter (1) is screwed into the threaded hole by the thread. A fixing nut (4) is installed on the outer side wall of the pressure transmitter (1), and a locking mechanism (5) is installed on the lower wall of the fixing nut (4). The locking mechanism (5) can fit against the side wall of the external natural gas pipeline.

2. The pipeline pressure monitoring device interlocked with a solenoid valve according to claim 1, characterized in that: The locking mechanism (5) includes a through hole (51), a support screw (52) and a sealing washer (53). The through hole (51) is opened on the upper wall of the fixing nut (4) and the through hole (51) penetrates the lower wall of the fixing nut (4). The through hole (51) is provided with an internal thread. The support screw (52) is screwed into the through hole (51) and can fit against the side wall of the external natural gas pipeline. The sealing washer (53) is fitted against the lower wall of the fixing nut (4).

3. A pipeline pressure monitoring device interlocked with a solenoid valve according to claim 2, characterized in that: The outer side wall of the support screw (52) is provided with an annular groove (6), and a rotating sleeve (7) is sleeved on the outer side wall of the support screw (52). A positioning protrusion (8) is installed on the inner side wall of the rotating sleeve (7), and the positioning protrusion (8) is inserted into the annular groove (6).

4. A pipeline pressure monitoring device interlocked with a solenoid valve according to claim 3, characterized in that: The support screw (52) is equipped with a rotating handle (9) on the outside of the upper end of the fixing nut (4), and a rubber sleeve (10) is installed on the lower end of the support screw (52) of the fixing nut (4). The rubber sleeve (10) can fit against the side wall of the external natural gas pipeline.

5. A pipeline pressure monitoring device interlocked with a solenoid valve according to claim 3, characterized in that: A sponge buffer sleeve (11) is fitted onto the outer side of the rotating sleeve (7).

6. A pipeline pressure monitoring device interlocked with a solenoid valve according to claim 1, characterized in that: The transmission line of the pressure transmitter (1) is fitted with a spiral protective sleeve (12).

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