Liquid phase heating device for measuring liquid level of low-temperature liquid

Abstract

The utility model discloses a liquid-phase heating device for measuring the liquid level of low-temperature liquid, which comprises a measured body, a first pressure guiding pipe, a second pressure guiding pipe, a heating component and a heat conducting clamp, a lower pressure tapping and an upper pressure tapping are arranged on the measured body, a pipe joint is arranged on the lower pressure tapping, and a pipe joint is arranged on the upper pressure tapping. One end of the first pressure guiding pipe and one end of the second pressure guiding pipe are respectively connected with the lower pressure tapping port and the upper pressure tapping port, and the other end of the first pressure guiding pipe and the other end of the second pressure guiding pipe are respectively connected with the pressure transmitter; the heating component is connected with the pipe joint through a heat-conducting clamp. According to the utility model, when the heating component is used for heating, heat generated by the heating component can be conducted to the pipe joint through the heat conduction clamp, and when low-temperature liquid in a measured body flows out of the lower pressure tapping port, the low-temperature liquid can be fully gasified through the heating effect of the heating component, so that the situation that a liquid section or a gas-liquid entrainment section exists in the first pressure guide pipe is avoided; and the accuracy of liquid level measurement is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to low temperature liquid liquid level measurement technical field, especially in low temperature liquid liquid level measurement's liquid phase heating device for a kind of. BACKGROUND

[0002] The rectifying tower in air separation device needs to measure the liquid level of low-temperature liquids such as liquid oxygen, liquid nitrogen, liquid argon and liquid air in the rectifying tower when in operation. The traditional measurement method is to arrange one pressure lead pipe on the lower pressure tapping and the upper pressure tapping of the rectifying tower, and the two pressure lead pipes are connected to a pressure transmitter at the same time. The position of the upper pressure tapping is higher than the liquid surface of the low-temperature liquid in the rectifying tower, and the position of the lower pressure tapping is at the bottom of the low-temperature liquid in the rectifying tower. The low-temperature liquid led out from the lower pressure tapping is gasified in the pressure lead pipe and reaches the pressure transmitter, and the pressure difference between the upper pressure tapping and the lower pressure tapping is measured by the pressure transmitter to calculate the liquid level height of the low-temperature liquid in the rectifying tower.

[0003] However, in actual measurement, the low-temperature liquid cannot be fully gasified in the pressure lead pipe during the process of flowing from the lower pressure tapping to the pressure transmitter, which leads to the existence of liquid section or gas-liquid entrainment section in the pressure lead pipe connected to the lower pressure tapping, which can cause inaccurate liquid level measurement or fluctuation of the measurement result. SUMMARY

[0004] The utility model discloses a kind of liquid phase heating devices for low-temperature liquid liquid level measurement to solve the deficiencies in prior art.

[0005] The utility model discloses a kind of liquid phase heating devices for low-temperature liquid liquid level measurement, including measured body, first pressure lead pipe, second pressure lead pipe, heating component, heat conduction clamp, lower pressure tapping and upper pressure tapping are equipped on measured body, pipe joint is provided on lower pressure tapping, one end of first pressure lead pipe and second pressure lead pipe is connected with lower pressure tapping and upper pressure tapping respectively, another end of first pressure lead pipe and second pressure lead pipe is connected pressure transmitter;Heating component is connected with pipe joint by heat conduction clamp.

[0006] Preferably, the heating component is a heating cable, and the heating cable is arranged along the first pressure lead pipe. The heating cable is arranged adjacent to the first pressure lead pipe, and one end of the heating cable is connected to the heat conduction clamp.

[0007] Preferably, the heat conduction clamp includes a clamp body and a locking bolt. The clamp body is provided with a clamping opening, and the clamping opening is provided with a pipe joint clamping groove and a heating component clamping groove. The pipe joint is arranged in the pipe joint clamping groove, and the heating component is arranged in the heating component clamping groove. The locking bolt is arranged on the clamp body and located at one end of the clamping opening.

[0008] Preferably, the material of the clamp body is copper.

[0009] As preferred, the measured body is arranged in a cold box, and the cold box wall is provided with measuring ports through which the first and second pressure pipes pass.

[0010] As preferred, the outside of the cold box wall is provided with a junction box, and the end of the heating cable away from the heat-conducting clamp is connected to the junction box.

[0011] As preferred, the first pressure pipe is provided with a first inclined section, and the end of the first inclined section close to the first pressure port is lower than the other end, and the inclination angle of the first inclined section is 10-15 degrees.

[0012] As preferred, the second pressure pipe is provided with a second inclined section, and the end of the second inclined section close to the second pressure port is lower than the other end, and the inclination angle of the second inclined section is 10-15 degrees.

[0013] As preferred, the measured body is a rectifying tower.

[0014] The beneficial effects of the present application are as follows: in the present application, when the heating component is heated, the heat generated by the heating component can be conducted to the pipe joint through the heat-conducting clamp, and when the low-temperature liquid in the measured body flows out from the lower pressure port, the low-temperature liquid can be fully gasified through the heating effect of the heating component, so that the liquid section or gas-liquid entrainment section in the first pressure pipe is avoided, and the accuracy of liquid level measurement is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a structural schematic view of the present application.

[0016] Fig. 2 It is a schematic view of the heating component fixed on the pipe joint through the heat-conducting clamp.

[0017] Fig. 3 It is a structural schematic view of the heat-conducting clamp.

[0018] In the figure: 1, measured body, 1a, lower pressure port, 1b, upper pressure port, 2, cold box wall, 2b, measuring port, 3, first pressure pipe, 3a, first inclined section, 4, second pressure pipe, 4b, second inclined section, 5, heat-conducting clamp, 5a, clamp body, 5b, clamp opening, 5c, clamping bolt, 6, junction box, 7, heating component, 8, pipe joint. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.

[0020] As Figs. 1 to 3 shown, a liquid phase heating device for low temperature liquid level measurement, comprising a measured body 1, a first pressure pipe 3, a second pressure pipe 4, a heating component 7, a heat conduction clamp 5, the measured body 1 is provided with a lower pressure tapping port 1a and an upper pressure tapping port 1b, the lower pressure tapping port 1a is provided with a pipe joint 8, one end of the first pressure pipe 3 and the second pressure pipe 4 is connected with the lower pressure tapping port 1a and the upper pressure tapping port 1b respectively, the other end of the first pressure pipe 3 and the second pressure pipe 4 is connected with a pressure transmitter respectively; the heating component 7 is connected with the pipe joint 8 through the heat conduction clamp 5.

[0021] In the utility model, the heating component 7 is connected with the pipe joint 8 on the lower pressure tapping port 1a through the heat conduction clamp 5, the heat conduction clamp 5 is made of heat conduction material and has good heat conductivity; when the heating component 7 is heated, the heat generated by the heating component 7 can be conducted to the pipe joint 8 through the heat conduction clamp 5, when the low temperature liquid in the measured body 1 flows out from the lower pressure tapping port 1a, the low temperature liquid can be fully gasified through the heating action of the heating component 7, so that the liquid segment or the gas-liquid entrainment segment in the first pressure pipe 3 is avoided, and the accuracy of liquid level measurement is ensured.

[0022] In the embodiment, the heating component 7 is a heating cable, and the heating cable is arranged along the first pressure pipe 3; the heating cable is arranged adjacent to the first pressure pipe 3, and one end of the heating cable is connected with the heat conduction clamp 5.

[0023] The heat conduction clamp 5 comprises a clamp body 5a and a clamping bolt 5c, the clamp body 5a is provided with a clamping opening 5b, the clamping opening 5b is provided with a pipe joint clamping groove and a heating component clamping groove, the pipe joint 8 is arranged in the pipe joint clamping groove, and the heating component 7 is arranged in the heating component clamping groove; the clamping bolt 5c is arranged on the clamp body 5a and located at one end of the clamping opening 5b. The clamp body 5a is in the shape of "U" as a whole, when the heating component 7 is fixed, one end of the heating component 7 is arranged in the heating component clamping groove, the pipe joint 8 is arranged in the pipe joint clamping groove, and then the clamping bolt 5c is tightened to clamp the pipe joint 8 and the heating component 7 at the same time by the clamp body, after clamping, the heating component 7 and the pipe joint 8 are in close contact with the clamp body, so that the heat of the heating component 7 can be efficiently transmitted to the pipe joint 8 through the heat conduction component.

[0024] In the embodiment, the material of the clamp body 5a is copper. Copper has good heat conductivity, and the heat generated by the heating component 7 can be efficiently conducted to the pipe joint 8 on the lower pressure tapping port, so that the low position liquid level is heated and gasified.

[0025] Further, the measured body 1 is arranged in a cold box, and a measurement opening 2b is arranged on a wall 2 of the cold box, and the first pressure pipe 3 and the second pressure pipe 4 can pass through the measurement opening 2b. An external connection box 6 is arranged on the outer side of the wall 2 of the cold box, and one end of the heating cable away from the heat conduction clamp 5 is connected to the connection box 6. The connection box 6 is connected to an external power supply device, and the heating cable is connected to the external power supply through the connection box 6, so that the heating cable can be heated.

[0026] The first pressure pipe 3 is provided with a first inclined section 3a, and the one end of the first inclined section 3a close to the first pressure opening is lower than the other end, and the inclination angle of the first inclined section 3a is 10-15 degrees.

[0027] The second pressure pipe 4 is provided with a second inclined section 4b, and the one end of the second inclined section 4b close to the second pressure opening is lower than the other end, and the inclination angle of the second inclined section 4b is 10-15 degrees.

[0028] In the embodiment, the measured body 1 is a rectifying tower.

[0029] The utility model is not limited to the above-mentioned best implementation, and anyone can draw other various forms of products under the enlightenment of the utility model, but no matter make any change in shape or structure, if the technical scheme is same or similar to the application, falls in the protection scope of the utility model.

Claims

1. A liquid phase heating device for cryogenic liquid level measurement, characterized by, The measured body, the first pressure pipe, the second pressure pipe, the heating component and the heat conduction clamp are included, the lower pressure port and the upper pressure port are arranged on the measured body, the pipe joint is arranged on the lower pressure port, one end of the first pressure pipe and the second pressure pipe is connected with the lower pressure port and the upper pressure port respectively, and the other end of the first pressure pipe and the second pressure pipe is connected with the pressure transmitter; the heating component is connected with the pipe joint through the heat conduction clamp.

2. A liquid phase heating device for cryogenic liquid level measurement according to claim 1, characterized in that, The heating component is a heating cable, the heating cable is arranged along the first pressure pipe, and the heating cable is arranged close to the first pressure pipe, and one end of the heating cable is connected with the heat conduction clamp.

3. A liquid phase heating device for cryogenic liquid level measurement according to claim 2, wherein, The heat conduction clamp includes a clamp body and a locking bolt, the clamp body is provided with a clamp opening, the clamp opening is provided with a pipe joint clamping groove and a heating component clamping groove, the pipe joint is arranged in the pipe joint clamping groove, and the heating component is arranged in the heating component clamping groove; the locking bolt is arranged on the clamp body and located at one end of the clamp opening.

4. A liquid phase heating device for cryogenic liquid level measurement according to claim 3, wherein, The material of the clamp body is copper.

5. A liquid phase heating device for cryogenic liquid level measurement according to claim 2, wherein, The measured body is arranged in a cold box, and the cold box wall is provided with a measurement port through which the first pressure pipe and the second pressure pipe pass.

6. A liquid phase heating device for cryogenic liquid level measurement according to claim 5, wherein, The outer side of the cold box wall is provided with a junction box, and one end of the heating cable away from the heat conduction clamp is connected with the junction box.

7. The liquid phase heating apparatus for cryogenic liquid level measurement of claim 1, wherein, The first pressure pipe is provided with a first inclined section, one end of the first inclined section close to the first pressure port is lower than the other end, and the inclination angle of the first inclined section is 10-15 degrees.

8. The liquid phase heating apparatus for cryogenic liquid level measurement of claim 1, wherein, The second pressure pipe is provided with a second inclined section, one end of the second inclined section close to the second pressure port is lower than the other end, and the inclination angle of the second inclined section is 10-15 degrees.

9. The liquid phase heating apparatus for cryogenic liquid level measurement of claim 1, wherein, The measured body is a rectifying tower.

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