Electric heating pressure reducing and regulating valve

Abstract

The utility model discloses an electric heating pressure reducing and regulating valve, which relates to the technical field of valve structures, and comprises a heating cavity arranged on one side of a valve body, and a feeding valve port and a discharging valve port respectively extend into the heating cavity; the spiral pipe is arranged in the heating cavity, one end of the spiral pipe is communicated with the feeding valve port, the other end of the spiral pipe is communicated with the discharging valve port, and the spiral pipe is spirally arranged in the heating cavity; the heating rod is arranged in the heating cavity, and the spiral pipe is arranged around the heating rod; and the electrical shell is arranged on one side of the heating cavity, and a cable of the heating rod extends to the electrical shell. According to the electric heating pressure reducing and regulating valve, the spiral pipe is spirally arranged, the structural size is greatly reduced, the conveying path of a medium in the channel is effectively prolonged, the heating rod can fully heat the medium in the spiral pipe, the heating efficiency is improved, the medium does not make direct contact with a heat source, medium pollution is avoided, and the service life of the valve is prolonged. The test accuracy of the medium sample is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valve structures, and particularly relates to an electric heating pressure reducing and regulating valve. Background Art

[0002] The electric heating vaporizing pressure regulating valve is a key component of the sample processing system of a gas chromatograph, and is used to ensure the stable delivery of a single-phase gaseous sample to the analyzer. Such a pressure regulating valve can be used to vaporize liquid samples or preheat gas samples to prevent sample condensation. It is widely used in analyzer systems in the fields of petroleum and natural gas, petrochemicals, and chemicals.

[0003] CN201510709672.4 discloses an electric heating vaporizing mechanism, which includes a sealed housing with a hollow interior. A heat exchange tube is arranged in the housing. The bottom end of the gas-liquid separation chamber is arranged in the housing. The gas-liquid separation chamber is arranged in the disc-shaped structure formed by the heat exchange tube. An air outlet pipe is arranged at the top end of the gas-liquid separation chamber. A pressure gauge, a safety valve, and a pressure regulator are arranged on the air outlet pipe. A water bath is arranged in the housing, and the water bath is connected to an electric heater. A thermocouple is arranged in the disc-shaped structure formed by the heat exchange tube. An electrical control box and a junction box are arranged outside the housing. A liquid level sensor and a temperature sensor are arranged inside the housing, and both the liquid level sensor and the temperature sensor are connected to the electrical control box. A sewage discharge plate is arranged inside the housing, and a drain pipe is arranged at the center of the sewage discharge plate.

[0004] The existing vaporizing pressure regulating valve has a large structure volume, resulting in the inability to further adjust the specifications of the analyzer equipment. In addition, the heating area of the existing heating structure is small, resulting in low heating efficiency and difficulty in improving the accuracy of equipment for testing samples. Summary of the Utility Model

[0005] The utility model aims to at least solve the technical problems existing in the prior art that "the existing vaporizing pressure regulating valve has a large structure volume, resulting in the inability to further adjust the specifications of the analyzer equipment. In addition, the heating area of the existing heating structure is small, resulting in low heating efficiency and difficulty in improving the accuracy of equipment for testing samples". For this purpose, the utility model provides an electric heating pressure reducing and regulating valve, which has a small structure volume, a large heat conduction area, high heating efficiency, and the medium does not contact the heat source, improving the test accuracy of the medium sample.

[0006] According to some embodiments of the utility model, the electric heating pressure reducing and regulating valve includes a valve body, and the valve body is provided with a feed valve port and a discharge valve port; it includes:

[0007] A heating chamber, arranged on one side of the valve body, and the feed valve port and the discharge valve port respectively extend into the heating chamber;

[0008] A spiral tube is arranged in the heating cavity. One end of the spiral tube is communicated with the feed valve port, and the other end is communicated with the discharge valve port. The spiral tube is spirally arranged in the heating cavity;

[0009] A heating rod is arranged in the heating cavity, and the spiral tube is arranged around the heating rod;

[0010] An electrical housing is arranged on one side of the heating cavity, and the cable of the heating rod extends to the electrical housing.

[0011] According to some embodiments of the present invention, a spiral groove is arranged on the side wall of the heating rod, and the spiral groove is arranged corresponding to the position of the spiral tube for increasing the heat conduction area.

[0012] According to some embodiments of the present invention, the diameter of the spiral groove is larger than the diameter of the spiral tube, and the heating rod is screwed into the spiral tube through the spiral groove.

[0013] According to some embodiments of the present invention, the end of the heating rod is close to the port of the heating cavity, and the electrical housing abuts against the port of the heating cavity and is electrically connected to the heating rod.

[0014] According to some embodiments of the present invention, a gap is arranged between the inner wall of the heating cavity and the spiral tube.

[0015] According to some embodiments of the present invention, the end of the spiral tube is inserted into the valve body, and the valve body is provided with a connecting pipe, and the connecting pipe is respectively communicated with the valve port and the end of the spiral tube.

[0016] According to some embodiments of the present invention, the spiral tube adopts a double - spiral structure.

[0017] According to some embodiments of the present invention, a control valve is arranged at the connection between the feed valve port and the spiral tube, and the control valve is used to control the connection or closure between the feed valve port and the connecting pipe.

[0018] According to some embodiments of the present invention, the control valve adopts a one - way valve structure.

[0019] According to some embodiments of the present invention, the interior of the heating cavity extends axially in the same direction as the extending direction of the spiral tube.

[0020] The electric heating pressure reducing and regulating valve according to some embodiments of the present utility model has at least the following beneficial effects: The spiral tube adopts a spiral layout, the structural volume is greatly reduced, the conveying path of the medium in the channel is effectively extended, so that the heating rod can fully heat the medium in the spiral tube, improving the heating efficiency, and the medium will not be in direct contact with the heat source, avoiding medium pollution and improving the test accuracy of the medium sample.

[0021] Additional aspects and advantages of the present utility model will be given in part in the following description, and part will become obvious from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0023] Figure 1 is a cross-sectional view of the electric heating pressure reducing and regulating valve according to an embodiment of the present utility model;

[0024] Figure 2 is a partial schematic view of the electric heating pressure reducing and regulating valve according to an embodiment of the present utility model.

[0025] Reference numerals:

[0026] valve body 110, feed valve port 111, discharge valve port 112, connecting pipe 113, control valve 120, connecting sleeve 130, heating chamber 210, spiral tube 310, heating rod 410, electrical housing 420. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0028] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, top, bottom, etc., which relate to the orientation description, is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0029] In the description of the present utility model, the meaning of "a number of" is one or more, the meaning of "a plurality of" is more than two, and understandings such as "greater than", "less than", "exceeding", etc. do not include the present number, and understandings such as "above", "below", "within", etc. include the present number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0030] In the description of the present utility model, unless otherwise clearly defined, words such as "set", "installed", "connected", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the above words in the present utility model in combination with the specific content of the technical solution.

[0031] The following refers to Figure 1 - Figure 2 Describe an electric heating pressure reducing and regulating valve according to an embodiment of the present utility model.

[0032] As Figure 1 - Figure 2 As shown, the electric heating pressure reducing and regulating valve includes a valve body 110, a heating chamber 210, a spiral tube 310, a heating rod 410, and an electrical housing 420. Specifically, the valve body 110 is provided with a feed valve port 111 and a discharge valve port 112, and the heating chamber 210 is arranged on one side of the valve body 110, and the feed valve port 111 and the discharge valve port 112 respectively extend into the heating chamber 210. Specifically, the heating chamber 210 is formed by sleeving the valve body 110 through a connecting sleeve 130, and the inside of the connecting sleeve 130 is the heating chamber 210.

[0033] The spiral tube 310 is arranged in the heating chamber 210, one end of the spiral tube 310 is communicated with the feed valve port 111, the other end is communicated with the discharge valve port 112, and the spiral tube 310 is spirally arranged in the heating chamber 210. The medium entering from the feed valve port 111 enters the spiral tube 310 and then enters the discharge valve port 112 through the spiral tube 310 path and is discharged.

[0034] The heating rod 410 is arranged in the heating chamber 210, the spiral tube 310 is arranged around the heating rod 410, and the heating rod 410 can heat the spiral tube 310, so as to vaporize the liquid sample or preheat the gas sample to prevent the sample from condensing. The spiral tube 310 spirals around the periphery of the heating rod 410, with a larger heating area and a concentrated heat source, which can effectively improve the heating efficiency and realize the rapid temperature rise of the medium. During the heating process, the medium is always in the spiral tube 310, effectively avoiding the direct contact between the medium and the heat source, avoiding the pollution of the medium, and ensuring the test accuracy of the sample. And the heating rod 410 will not contact the medium, which can also avoid the corrosion of the heating rod 410 and improve the service life of the heating rod 410.

[0035] The electrical housing 420 is arranged on one side of the heating chamber 210. The cable of the heating rod 410 extends to the electrical housing 420. A control component is arranged inside the electrical housing 420, and the control component is used to control the working state of the heating rod 410. The electrical housing 420 utilizes the longitudinal space layout and is arranged in the axial direction of the valve body 110, making the overall structure of the pressure regulating valve more slender and reducing the structural volume.

[0036] In some embodiments of the present invention, such as Figure 1 and Figure 2 shown, a spiral groove (not shown in the attached drawings) is provided on the side wall of the heating rod 410. The spiral groove is arranged corresponding to the position of the spiral tube 310 for increasing the heat conduction area. Specifically, in order to further improve the heating efficiency of the medium in the spiral tube 310, a spiral groove is provided on the side wall surface of the heating rod 410. The spiral groove is recessed towards the surface of the heating rod 410, which can increase the direct contact area between the heating rod 410 and the spiral tube 310, thereby improving the heating efficiency of the spiral tube 310 and making the medium in the spiral tube 310 heat up faster.

[0037] Furthermore, the diameter of the spiral groove is larger than the diameter of the spiral tube 310, and the heating rod 410 is screwed into the spiral tube 310 through the spiral groove. The diameter of the spiral groove of the heating rod 410 is slightly larger than the diameter of the spiral tube 310, so that there is a certain interference amount between the spiral tube 310 and the heating rod 410. When installing, the heating rod 410 is screwed into the spiral tube 310, making the spiral tube 310 tightly attached to the heating rod 410 to ensure the high efficiency of heat conduction.

[0038] In some embodiments of the present invention, such as Figure 1 and Figure 2 shown, a gap is provided between the inner wall of the heating chamber 210 and the spiral tube 310. Specifically, there is a certain distance between the heating chamber 210 and the spiral tube 310 to prevent the heat of the spiral tube 310 from being dissipated to the outside through the inner wall of the heating chamber 210 and affecting the heating efficiency.

[0039] In some embodiments of the present invention, such as Figure 1 and Figure 2 shown, the end of the spiral tube 310 is inserted into the valve body 110. The valve body 110 is provided with a connecting pipe 113, and the connecting pipe 113 communicates with the valve port and the end of the spiral tube 310 respectively. Specifically, the end of the spiral tube 310 is tightly connected with the connecting pipe 113 to improve the sealing performance.

[0040] In some embodiments of the present invention, such as Figure 1 and Figure 2 shown, the spiral tube 310 adopts a double - spiral structure. Specifically, the double - spiral structure can increase the contact area between the spiral tube 310 and the heating rod 410, and make the heat of the heating rod 410 concentrated inside, improving the heating efficiency.

[0041] In some embodiments of the present utility model, as Figure 1 and Figure 2 shown, a control valve 120 is provided at the connection between the feed valve port 111 and the spiral tube 310. The control valve 120 is used to control the connection or closure between the feed valve port 111 and the connecting pipe 113. Specifically, the control valve 120 is a well-known technical solution to those skilled in the art and will not be described in detail in this embodiment. In this embodiment, the control valve 120 adopts a check valve structure.

[0042] In some embodiments of the present utility model, as Figure 1 and Figure 2 shown, the interior of the heating chamber 210 extends axially in the same direction as the extending direction of the spiral tube 310. The axial space of the pressure regulating valve can be utilized to increase the length of the heating chamber 210, so that the length of the spiral tube 310 correspondingly increases, and the transmission path of the medium in the spiral tube 310 is increased.

[0043] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0044] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. An electrically heated pressure reducing and regulating valve, comprising a valve body (110), wherein the valve body (110) is provided with an inlet valve port (111) and an outlet valve port (112); characterized in that: include: A heating chamber (210) is arranged on one side of the valve body (110), and the feed valve port (111) and the discharge valve port (112) respectively extend into the heating chamber (210); a spiral tube (310) disposed in the heating chamber (210), one end of the spiral tube (310) being in communication with the feed valve port (111), and the other end of the spiral tube (310) being in communication with the discharge valve port (112), and the spiral tube (310) being disposed in a spiral manner in the heating chamber (210); A heating rod (410) is disposed in the heating chamber (210), and the spiral tube (310) is disposed around the heating rod (410); An electrical housing (420) is disposed on one side of the heating chamber (210), and a cable of the heating rod (410) extends to the electrical housing (420).

2. The electrically heated pressure reducing and regulating valve according to claim 1, characterized in that: The side wall of the heating rod (410) is provided with a spiral groove, and the spiral groove is arranged corresponding to the position of the spiral tube (310) to increase the heat conduction area.

3. The electrically heated pressure reducing and regulating valve according to claim 2, characterized in that: The diameter of the spiral groove is greater than the diameter of the spiral tube (310), and the heating rod (410) is screwed into the spiral tube (310) through the spiral groove.

4. The electrically heated pressure reducing and regulating valve according to claim 3, characterized in that: The end of the heating rod (410) is close to the port of the heating chamber (210), and the electrical housing (420) abuts against the port of the heating chamber (210) and is electrically connected to the heating rod (410).

5. The electrically heated pressure reducing and regulating valve according to claim 1, characterized in that: A gap is provided between the inner wall of the heating chamber (210) and the spiral tube (310).

6. The electrically heated pressure reducing and regulating valve according to claim 5, characterized in that: The end of the spiral tube (310) is inserted into the valve body (110), and the valve body (110) is provided with a connecting pipe (113), and the connecting pipe (113) is respectively connected to the valve port and the end of the spiral tube (310).

7. The electrically heated pressure reducing and regulating valve according to claim 6, characterized in that: The spiral tube (310) adopts a double spiral structure.

8. The electrically heated pressure reducing and regulating valve according to claim 7, characterized in that: A control valve (120) is provided at the connection point between the feed valve port (111) and the spiral tube (310), and the control valve (120) is used to control the connection or closing of the feed valve port (111) and the connecting pipe (113).

9. The electrically heated pressure reducing and regulating valve according to claim 8, characterized in that: The control valve (120) adopts a one-way valve structure.

10. The electrically heated pressure reducing and regulating valve according to any one of claims 1 to 9, characterized in that: The interior of the heating chamber (210) extends axially in the same direction as the extension direction of the spiral tube (310).

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