Pressure guiding device penetrating through pressure-bearing shell of pressure container to guide pressure in inner cylinder

Abstract

The utility model relates to a pressure guiding device penetrating through a pressure container pressure-bearing shell to guide pressure in an inner cylinder, the pressure-bearing shell is sleeved outside the inner cylinder, the side walls of the inner cylinder and the pressure-bearing shell are respectively provided with an inner hole and an outer hole which are opposite to each other, the pressure guiding device comprises a pressure guiding pipe penetrating through the outer hole to be connected and communicated with the inner hole, and the outer end of the pressure guiding pipe is communicated with a pressure measuring structure; the pressure guide sleeve is positioned outside the pressure-bearing shell, is connected with the outer hole of the pressure-bearing shell and is sleeved on the pressure guide pipe; the sealing seat is in threaded connection with one end, far away from the pressure bearing shell, of the pressure guide sleeve and is in sealed connection with the outer wall surface, extending out of the pressure guide sleeve, of the pressure guide pipe; and the cooling structure is used for controlling the temperature of the medium in the pressure guide sleeve to be within a set range. The pressure guiding device can penetrate through the pressure-bearing shell of the pressure container and communicate with the inner side of the inner cylinder in the pressure-bearing shell under the conditions of high temperature and high pressure to conduct pressure guiding testing, the cooling structure can adjust the temperature of a medium according to the working condition of the sealing ring, and the pressure guiding device can adapt to different working temperatures and pressures according to material type selection of the sealing ring.

Description

Technical Field

[0001] The utility model relates to the field of nuclear power, and more specifically to a pressure-inducing device which penetrates through a pressure-bearing shell of a pressure vessel and induces pressure in an inner cylinder. Background Art

[0002] In the electric power, chemical, machinery and other industries, it is often necessary to measure the pressure inside the inner cylinder of a high-temperature and high-pressure pressure vessel. The pressure-inducing structure needs to pass through the pressure vessel pressure shell and the inner cylinder at the same time; at the same time, the sealing problem under high-temperature and high-pressure conditions needs to be solved.

[0003] There are several pressure measuring devices disclosed in the related technology. Some pressure measuring devices can only measure the pressure inside a single-layer container, but cannot measure the pressure inside the inner cylinder of the pressure vessel. The spiral pressure-inducing tube of the device is made of tube and aluminum, and the pressure value it can withstand is relatively limited. Some pressure measuring devices cannot measure the pressure inside the inner cylinder of the pressure vessel, and can only measure the pressure value of the medium being gas. Their pressure and temperature resistance capabilities are also relatively limited. In addition, there are also pressure measuring devices that can only measure the pressure value of the medium being gas, and the pressure-inducing tube is connected to a soft rubber tube, and its temperature and pressure resistance capabilities are limited. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a pressure-inducing device which penetrates through the pressure-bearing shell of a pressure vessel and draws pressure in the inner cylinder in view of the above-mentioned defects of the prior art.

[0005] The utility model solves the technical problem by adopting a technical solution: constructing a pressure-inducing device that penetrates the pressure-bearing shell of the pressure vessel and draws pressure in the inner cylinder, the pressure-bearing shell is sleeved outside the inner cylinder, and the inner cylinder and the side walls of the pressure-bearing shell are respectively provided with an inner hole and an outer hole facing each other, and the pressure-inducing device comprises:

[0006] A pressure-inducing pipe passes through the outer hole and is connected to and communicates with the inner hole, and the outer end of the pressure-inducing pipe is connected to a pressure measuring structure;

[0007] A pressure-inducing sleeve is located outside the pressure-bearing shell, connected to the outer hole of the pressure-bearing shell, and sleeved onto the pressure-inducing pipe;

[0008] a sealing seat, which is threadedly connected to one end of the pressure-inducing sleeve away from the pressure-bearing shell and is sealingly connected to the outer wall surface of the pressure-inducing sleeve extending out of the pressure-inducing sleeve, and

[0009] The cooling structure is used to control the temperature of the medium in the pressure-inducing sleeve to be within a set range.

[0010] In some embodiments, the pressure-inducing tube is threadedly locked to the inner hole, and a first sealing gasket is provided between the pressure-inducing tube and the inner hole.

[0011] In some embodiments, the pressure-inducing device further includes a pulse connecting pipe connected to the outer end of the pressure-inducing pipe.

[0012] In some embodiments, the pressure-conducting tube and the pulse connecting tube are locked and connected via a compression seat.

[0013] In some embodiments, the pressure-introducing sleeve is fixed to the pressure shell by welding.

[0014] In some embodiments, a gap is left between the pressure-inducing sleeve and the pressure-inducing tube.

[0015] In some embodiments, a second sealing gasket is provided between the sealing seat and the pressure-inducing sleeve.

[0016] In some embodiments, a sealing ring is provided between the sealing seat and the pressure-inducing tube.

[0017] In some embodiments, the cooling structure includes a water tank having a water inlet and a water outlet. The cooling structure controls the inlet and outlet flow rates to control the temperature of the medium in the pressure-inducing sleeve, so that the sealing ring is within the operating temperature range.

[0018] In some embodiments, the water tank is mounted on the outside of the pressure-introducing sleeve to control the temperature of the medium in the pressure-introducing sleeve by adjusting the flow rate of the cooling medium flowing into the water tank.

[0019] The implementation of the pressure-drawing device of the utility model that penetrates the pressure shell of a pressure vessel and draws pressure in the inner cylinder has the following beneficial effects: the pressure-drawing device can penetrate the pressure shell of the pressure vessel under high temperature and high pressure conditions and connect to the inside of the inner cylinder in the pressure shell to perform a pressure-drawing test; the cooling structure can adjust the temperature of the medium according to the working conditions of the sealing ring, so that the pressure-drawing device can adapt to different working temperatures and pressures according to the material selection of the sealing ring; the working condition span is large and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0021] Figure 1 It is a structural schematic diagram of an embodiment of the utility model in which a pressure-inducing device penetrating through the pressure-bearing shell of the pressure vessel and inducing pressure in the inner cylinder is arranged on the pressure vessel;

[0022] Figure 2 yes Figure 1 Schematic diagram of the local structure when the central pressure device is connected to the pressure vessel. DETAILED DESCRIPTION

[0023] In order to have a clearer understanding of the technical features, purposes and effects of the present utility model, the specific implementation methods of the present utility model are now described in detail with reference to the accompanying drawings.

[0024] like Figure 1 , 2 As shown, a pressure vessel 10 in a preferred embodiment of the utility model includes a pressure shell 11 and an inner tube 12. The pressure shell 11 is sleeved outside the inner tube 12. The side walls of the pressure shell 11 and the inner tube 12 are respectively provided with an outer hole 111 and an inner hole 121 facing each other. The outer hole 111 and the inner hole 121 need to ensure a certain coaxiality to facilitate later assembly. They can be connected to a pressure-inducing device 20 for pressure-inducing testing. In some embodiments, the pressure-inducing device 20 includes a pressure-inducing pipe 21, a pressure-inducing sleeve 22, a sealing seat 23, and a cooling structure 24.

[0025] Furthermore, the pressure-leading tube 21 passes through the outer hole 111 and is connected to the inner hole 121, so that the medium in the inner tube 12 can be led out through the pressure-leading tube 21. The outer end of the pressure-leading tube 21 is provided with a thread and a symmetrical plane for convenient clamping of a wrench, which is used to be tightened with a clamping seat 27 when connected to the pulse connecting tube 26. The pulse connecting tube 26 is then connected to the pressure measuring structure for pressure measurement.

[0026] The pressure-inducing sleeve 22 is located outside the pressure-bearing shell 11, connected to the outer hole 111 of the pressure-bearing shell 11, and sleeved on the pressure-inducing tube 21. Usually, there is a gap between the pressure-inducing tube 21 and the pressure-inducing sleeve 22, which facilitates the assembly of the pressure-inducing tube 21 and the inner tube 12. The sealing seat 23 is threadedly connected to the end of the pressure-inducing sleeve 22 away from the pressure-bearing shell 11 and is sealed with the outer wall surface of the pressure-inducing sleeve 22 extending out of the pressure-inducing tube 21, and the end of the pressure-inducing sleeve 22 away from the pressure-bearing shell 11 is sealed with the pressure-inducing tube 21, so that the medium between the pressure-inducing sleeve 22 and the pressure-inducing tube 21 can be prevented from leaking outward.

[0027] Specifically, in this embodiment, a sealing ring 25 is provided between the sealing seat 23 and the pressure-inducing pipe 21 to improve the sealing performance. In this embodiment, a sealing groove 231 is provided on the sealing seat 23 for the sealing ring 25 to be embedded, which is conducive to fixing the sealing ring 25. Of course, the temperature of the medium between the pressure-inducing sleeve 22 and the pressure-inducing pipe 21 is relatively high, which will affect the sealing ring 25 of the sealing seat 23, resulting in a decrease in the sealing performance of the sealing ring 25. At this time, the cooling structure 24 is required to cool and reduce the temperature of the medium between the pressure-inducing sleeve 22 and the pressure-inducing pipe 21.

[0028] The cooling structure 24 can cool the outer wall of the pressure-introducing sleeve 22 on the outside of the pressure-introducing sleeve 22, thereby reducing the temperature of the medium between the pressure-introducing sleeve 22 and the pressure-introducing tube 21, and is used to control the temperature of the medium in the pressure-introducing sleeve 22 within a set range to avoid reducing the sealing performance of the sealing ring 25.

[0029] Based on the above pressure-inducing device 20, under high temperature and high pressure conditions, the pressure-inducing test can be performed by penetrating the pressure shell 11 of the pressure vessel 10 and connecting to the inner side of the inner tube 12 in the pressure shell 11. The cooling structure 24 can adjust the temperature of the medium according to the working conditions of the sealing ring 25, so that the pressure-inducing device 20 can adapt to different working temperatures and pressures according to the material selection of the sealing ring 25, with a wide working condition span and easy operation.

[0030] The pressure-inducing tube 21 is threadedly locked to the inner hole 121, and a first sealing gasket 211 is provided between the pressure-inducing tube 21 and the inner hole 121. The connecting threads of the pressure-inducing tube 21 and the inner tube 12 must have sufficient strength to ensure that the pressure-inducing tube 21 is always fixed on the inner tube 12 under high pressure conditions and that the sealing is also ensured.

[0031] The pressure-introducing sleeve 22 is welded and fixed to the pressure-bearing shell 11, and the length of the pressure-introducing sleeve 22 depends on the size of the cooling structure 24 and the operable space. As before, the pressure-introducing sleeve 22 needs to be cooled to reduce the temperature of the medium inside.

[0032] A second sealing gasket 232 is provided between the sealing seat 23 and the pressure-inducing sleeve 22 to seal the fitting between the sealing seat 23 and the pressure-inducing sleeve 22 to prevent leakage.

[0033] Furthermore, the cooling structure 24 includes a water tank 241, which is provided with a water inlet 242 and a water outlet 243. The size of the water tank 241 is determined according to the heat exchange capacity. The water inlet 242 and the water outlet 243 are provided with quick connectors for controlling the temperature of the medium in the pressure-inducing sleeve 22 within the allowable use range of the sealing ring 25.

[0034] Specifically, the cooling structure 24 can control the temperature of the cooling medium in the water tank 241 by controlling the flow rate in and out of the water inlet 242 and the water outlet 243. When the flow rate is fast, the heat taken away from the pressure-inducing sleeve 22 is large, and when the flow rate is slow, the heat taken away from the pressure-inducing sleeve 22 is small. The temperature of the medium in the pressure-inducing sleeve 22 can be controlled, so that the sealing ring 25 is within the operating temperature range, avoiding affecting the life and use of the sealing ring 25, and can play a normal sealing role.

[0035] In this embodiment, the water tank 241 is sleeved on the outside of the pressure-introducing sleeve 22 so that the flow rate of the cooling medium flowing into the water tank 241 can cool the outer wall of the pressure-introducing sleeve 22 and control the temperature of the medium in the pressure-introducing sleeve 22.

[0036] Furthermore, the pressure-guiding device 20 also includes a pulse connecting pipe 26 connected to the outer end of the pressure-guiding pipe 21. The medium in the inner tube 12 can be led out through the pressure-guiding pipe 21 and the pulse connecting pipe 26. The pulse connecting pipe 26 can be connected to the pressure measuring structure as required.

[0037] Installation sequence: install the first sealing gasket 211 in the inner hole 121 of the inner tube 12, and install the three sealing rings 25 in the sealing groove 231 of the sealing seat 23; pass the pressure-inducing pipe 21 through the sealing seat 23, the second sealing gasket 232, the pressure-inducing sleeve 22 and the pressure-bearing shell 11 in sequence; tighten and lock one end of the pressure-inducing pipe 21 with the inner hole 121 of the inner tube 12, then tighten the sealing seat 23 on the pressure-inducing sleeve 22, and finally put the pressing seat 27 into the pulse connecting pipe 26 and tighten it on the pressure-inducing pipe 21;

[0038] After the installation is completed, the medium in the inner tube 12 can be led out through the pressure-leading pipe 21 and the pulse connecting pipe 26 , and the pulse connecting pipe 26 can be connected to the pressure measuring structure as required.

[0039] The utility model has the following purposes:

[0040] 1. It can solve the problem of through-type pressure drawing, ensure the sealing between the pressure drawing device 20 and the inner tube 12, and ensure the sealing between the pressure drawing device 20 and the pressure shell 11, so that the medium in the inner tube 12 can be drawn out; prevent the leakage of fluid medium in the pressure vessel 10 under high temperature and high pressure conditions.

[0041] 2. The current high temperature and high pressure sealing rings 25 have a maximum temperature limit for use. As the temperature rises and the use time increases, the sealing performance will decrease. The cooling structure 24 of the utility model can further effectively reduce the working temperature of the sealing ring 25, so that it can be used for a longer time.

[0042] 3. The pressure-inducing device 20 is simplified, easy to operate, and reduces production and maintenance costs.

[0043] 4. A sealing groove 231 is provided for installing the sealing ring 25, which effectively prevents the sealing ring 25 from being crushed and displaced under high pressure.

[0044] It can be understood that the above-mentioned technical features can be used in any combination without limitation.

[0045] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A pressure-inducing device that penetrates the pressure-bearing shell of a pressure vessel and draws pressure into an inner cylinder, wherein the pressure-bearing shell (11) is sleeved outside the inner cylinder (12), and is characterized in that: The inner tube (12) and the side wall of the pressure-bearing shell (11) are respectively provided with an inner hole (121) and an outer hole (111) facing each other, and the pressure-inducing device (20) comprises: A pressure-inducing tube (21) passes through the outer hole (111) and is connected and communicated with the inner hole (121), and the outer end of the pressure-inducing tube (21) is connected to a pressure measuring structure; A pressure-inducing sleeve (22) is located outside the pressure-bearing shell (11), connected to an outer hole (111) of the pressure-bearing shell (11), and sleeved onto the pressure-inducing pipe (21); A sealing seat (23) is threadedly connected to one end of the pressure-inducing sleeve (22) away from the pressure-bearing shell (11) and is sealedly connected to the outer wall surface of the pressure-inducing sleeve (22) extending out of the pressure-inducing tube (21); a cooling structure (24) is used to control the temperature of the medium in the pressure-inducing sleeve (22) within a set range.

2. The pressure-inducing device for penetrating the pressure-bearing shell of a pressure vessel and inducing pressure in the inner cylinder according to claim 1, characterized in that: The pressure-inducing tube (21) is threadedly locked to the inner hole (121), and a first sealing gasket (211) is provided between the pressure-inducing tube (21) and the inner hole (121).

3. The pressure-inducing device for penetrating the pressure-bearing shell of a pressure vessel and inducing pressure in the inner cylinder according to claim 1, characterized in that: The pressure-inducing device (20) further comprises a pulse connecting pipe (26) connected to the outer end of the pressure-inducing pipe (21).

4. The pressure-inducing device for penetrating the pressure-bearing shell of a pressure vessel and inducing pressure in the inner cylinder according to claim 3, characterized in that: The pressure-guiding pipe (21) and the pulse connecting pipe (26) are locked and connected via a compression seat (27).

5. The pressure-inducing device for penetrating the pressure-bearing shell of a pressure vessel and inducing pressure in the inner cylinder according to claim 1, characterized in that: The pressure-introducing sleeve (22) is connected and fixed to the pressure-bearing shell (11) by welding.

6. The pressure-inducing device for penetrating the pressure-bearing shell of a pressure vessel and inducing pressure in the inner cylinder according to claim 1, characterized in that: A gap is left between the pressure-inducing sleeve (22) and the pressure-inducing pipe (21).

7. The pressure-inducing device for penetrating the pressure-bearing shell of a pressure vessel and inducing pressure in the inner cylinder according to claim 6, characterized in that: A second sealing gasket (232) is provided between the sealing seat (23) and the pressure-inducing sleeve (22).

8. The pressure-inducing device for penetrating the pressure-bearing shell of a pressure vessel and inducing pressure in the inner cylinder according to claim 6, characterized in that: A sealing ring (25) is provided between the sealing seat (23) and the pressure-guiding tube (21).

9. The pressure-inducing device for penetrating the pressure-bearing shell of a pressure vessel and inducing pressure in the inner cylinder according to claim 8, characterized in that: The cooling structure (24) comprises a water tank (241), and the water tank (241) is provided with a water inlet (242) and a water outlet (243). The cooling structure (24) controls the inlet and outlet flow rates to control the temperature of the medium in the pressure-inducing sleeve (22), so that the sealing ring (25) is within the operating temperature range.

10. The pressure-inducing device for penetrating the pressure-bearing shell of a pressure vessel and inducing pressure in the inner cylinder according to claim 9, characterized in that: The water tank (241) is sleeved on the outside of the pressure-introducing sleeve (22) so as to control the temperature of the medium in the pressure-introducing sleeve (22) by adjusting the flow rate of the cooling medium flowing into the water tank (241).

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