Carbon ring sealer for chlorine gas compressor and assembly method

Abstract

The present invention relates to a carbon ring sealer for a chlorine compressor and an assembly method. It solves the defects of the prior art such as unreasonable design. The carbon ring sealer for a chlorine compressor comprises a sealer seat, an annular sealer is fixed in the sealer seat, a plurality of carbon rings are arranged on the inner wall of the annular sealer and are spaced apart along the axial direction of the annular sealer, a limiting movable ring formed by a plurality of annular limiting blocks abutting against each other is arranged in the annular sealer, an annular balancing airway, an annular mixed gas channel and an annular sealing air channel are arranged in the radial direction of the annular sealer and are spaced apart in sequence along the X direction, a first clearance fitting seam between two adjacent annular limiting blocks among the plurality of annular limiting blocks is connected to the annular balancing airway, a second clearance fitting seam between two adjacent annular limiting blocks is connected to the annular mixed gas channel, and a third clearance fitting seam between two adjacent annular limiting blocks is connected to the annular sealing air channel. Advantages of the present application: cost reduction.

Description

Technical Field

[0001] The invention belongs to the technical field of chlorine gas transportation, and in particular relates to a carbon ring sealer for a chlorine gas compressor and an assembly method thereof. Background Art

[0002] Chlorine is a toxic and highly dangerous gas. The compressor uses the high-speed rotation of the rotor to make the chlorine do work, which can improve the efficiency of chlorine transportation.

[0003] The sealing of the rotor when it rotates is an important key. For example, the isolation gas sealing structure for the process gas compressor, patent number CN202120530124.6, includes a labyrinth seal ring sleeved on the high-pressure side of the compressor shaft, and the end of the labyrinth seal ring close to the atmosphere is connected to the carbon ring sealing structure, and the carbon ring sealing structure includes a first sealing unit and at least three groups of second sealing units; the first sealing unit includes a first sealing seat and a first carbon ring corresponding thereto; each group of second sealing units includes a second carbon ring seat and a second carbon ring corresponding thereto, and the first carbon ring and the second carbon ring are provided with mounting pins, and the first carbon ring and the second carbon ring are provided with tension springs away from the compressor shaft. This scheme is used for the isolation gas sealing structure of the process gas compressor, and the pressure is reduced in a gradient after passing through multiple carbon rings. At the same time, the process gas is prevented from overflowing by connecting the isolation gas with a pressure greater than that of the process gas, and the excess isolation gas is discharged through the atmospheric through hole, further preventing the process gas from leaking, thereby achieving the purpose of sealing the process gas.

[0004] Although the above scheme has the above technical advantages, it has the following technical problems: although the leaked gas is mixed and discharged by atmospheric pressure, the mixed gas can only be directly scrapped, resulting in increased costs, for example, the treatment of mixed exhaust gas and direct waste of high-pressure side gas. Summary of the invention

[0005] The object of the present invention is to provide a carbon ring sealer for a chlorine compressor and an assembly method thereof, which can solve the above technical problems.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] The carbon ring sealer for chlorine gas compressor comprises a sealer seat, an annular sealer is fixed in the sealer seat, a plurality of carbon rings are arranged on the inner wall of the annular sealer and are spaced apart along the axial direction of the annular sealer, a limit ring formed by a plurality of annular limit blocks abutting against each other is arranged in the annular sealer, the inner diameter of the carbon ring is smaller than the inner diameter of the limit ring, an annular balance air passage, an annular mixed gas passage and an annular sealing air passage are arranged in the radial direction of the annular sealer and are spaced apart in sequence along the X direction, a first clearance fit seam between two adjacent annular limit blocks among the plurality of annular limit blocks is communicated with the annular balance air passage, a second clearance fit seam between two adjacent annular limit blocks among the remaining annular limit blocks is communicated with the annular mixed gas passage, and finally a third clearance fit seam between two adjacent annular limit blocks among the remaining annular limit blocks is communicated with the annular sealing air passage;

[0008] Part of the high-pressure gas entering the carbon ring sealer from the X direction enters the annular balance air channel from the first gap fitting seam and is recycled, and the remaining high-pressure gas continues to flow in the X direction and injects an injection gas pressure equal to or greater than the pressure of the high-pressure gas into the annular sealing air channel, and part of the injection gas pressure enters the carbon ring sealer from the third gap fitting seam and the part of the injection gas pressure flows in the opposite direction to the X direction and merges with the remaining high-pressure gas in a convection state to form a mixed exhaust gas that enters the annular mixed gas channel from the second gap fitting seam.

[0009] In the above-mentioned carbon ring sealer for chlorine compressor, an annular positioning groove is provided in the annular sealer, the annular balancing air channel, the annular mixed gas channel and the annular sealing air channel are respectively connected to the bottom of the annular positioning groove, and the limiting movable ring is installed in the annular positioning groove.

[0010] In the above-mentioned carbon ring sealer for chlorine compressor, the facing annular end faces of two adjacent annular limit blocks are in contact with each other to form the above-mentioned first clearance fit seam, the second clearance fit seam and the third clearance fit seam, and the two annular limit blocks located at the two ends of the X direction are clearance-matched with the corresponding axial end shoulder blocks of the annular sealer.

[0011] In the above-mentioned carbon ring sealer for the chlorine compressor, the inner walls of two adjacent annular limit blocks, and the two annular limit blocks located in the X direction and the corresponding end shoulders form a carbon ring fixing groove, at least one of the first clearance fitting seams is directly connected to the carbon ring fixing groove at the corresponding position, at least one of the second clearance fitting seams is directly connected to the carbon ring fixing groove at the corresponding position, and at least one of the third clearance fitting seams is directly connected to the carbon ring fixing groove at the corresponding position.

[0012] In the above-mentioned carbon ring sealer for chlorine gas compressor, there are at least three groups of two adjacent annular limit blocks, and the outer wall of each group of two adjacent annular limit blocks is formed with an inner groove body. In the X direction, the three inner groove bodies are defined as a first inner groove body, a second inner groove body and a third inner groove body. The annular balance air channel is connected to the groove of the first inner groove body, the annular mixed gas channel is connected to the groove of the second inner groove body, and the annular sealing gas channel is connected to the groove of the third inner groove body.

[0013] In the above-mentioned carbon ring sealer for chlorine compressor, the thickness of the annular limit block in the X direction is greater than the width of the annular balance air channel or the width of the annular mixed gas channel or the width of the annular sealing air channel, and the outer wall of one of the annular limit blocks in each group of two adjacent annular limit blocks is provided with a step, and when the two adjacent annular limit blocks abut against each other, the step and the end face of the other annular limit block form the inner groove body.

[0014] In the above-mentioned carbon ring sealer for chlorine compressor, the annular end faces of the three other annular limit blocks are defined as the first annular end face, the second annular end face and the third annular end face in sequence, the first annular end face is flush with a side wall of the annular balancing air channel, the second annular end face is flush with a side wall of the annular mixed gas channel, and the third annular end face is flush with a side wall of the annular sealing gas channel.

[0015] In the above-mentioned carbon ring sealer for chlorine compressor, a high-pressure gas recovery hole connected to the annular balance gas channel, a mixed waste gas discharge hole connected to the annular mixed gas channel, and an injection gas pressure inlet hole connected to the annular sealing gas channel are provided on the sealer seat.

[0016] In the above-mentioned carbon ring sealer for chlorine gas compressor, an annular fixing spring is provided on the outer peripheral surface of each carbon ring and the bottom of the carbon ring fixing groove, and a limit spring distributed along the X direction is provided between at least one of the two carbon ring end faces in the thickness direction of the carbon ring and the groove wall of the carbon ring fixing groove, and the limit springs are evenly distributed in the circumferential direction of the end face of the carbon ring.

[0017] The present application also provides an assembly method of a carbon ring sealer for a chlorine compressor, the assembly method comprising the following steps:

[0018] S1. Fix the annular sealer, and configure end shoulders at both ends of the annular sealer, wherein one of the end shoulders and the annular sealer is connected as an integral structure, and the other end shoulder and the annular sealer are detachably connected and the other end shoulder is detached from the annular sealer;

[0019] S2, taking the end shoulder integrally connected with the annular sealer as the assembly reference, alternately assembling carbon rings and annular limit blocks into the annular sealer, wherein the corresponding annular end faces of two adjacent annular limit blocks coincide with each other and a plurality of the annular limit blocks form a limit movable ring;

[0020] S3, fix the detachable end shoulder in S1 to the annular sealer, and the annular limit block assembled last on the end shoulder abuts against it; the inner walls of two adjacent annular limit blocks, and the two annular limit blocks located in the X direction form a carbon ring fixing groove with the corresponding end shoulder, each of the carbon ring fixing grooves is provided with a carbon ring, and at least part of the carbon ring is installed in the carbon ring fixing groove.

[0021] The present application also provides a chlorine compressor, which has the carbon ring sealer for the chlorine compressor.

[0022] Compared with the existing technology, the advantages of this application are:

[0023] A number of annular limit blocks and their mutually fitting gaps are set up, and combined with the convective high-pressure airflow, part of the original high-pressure gas enters the annular balance airway, and the remaining part of the high-pressure airflow enters the annular mixed gas channel after the injection air pressure convection injected into the annular sealing air channel. The above process can recycle part of the high-pressure airflow of the original high-pressure airflow, and the convection type can be used to remove the pressure of the remaining escaping high-pressure airflow to ensure the sealing performance of the sealer. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The present invention is a schematic structural diagram of a carbon ring sealer for a chlorine compressor.

[0025] Figure 2 It is a structural schematic diagram of embodiment 2 provided by the present invention.

[0026] Figure 3 The figure is a schematic diagram of the structure of the chlorine compressor provided by the present invention.

[0027] In the figure, a sealer seat 1, a high-pressure gas recovery hole 10, an annular sealer 2, an annular positioning groove 20, an end shoulder 21, an O-ring 22, a limiting convex ring 23, a carbon ring 3, a fixing spring 30, a limiting spring 31, a first spring positioning hole 32, a first hemispherical body 33, a limiting movable ring 4, an annular limiting block 40, a first annular end face 400, a second annular end face 401, a third annular end face 402, a carbon ring fixing groove 41, a first inner groove body 410, a second inner groove body 411, a third inner groove body 412, a second spring positioning hole 413, a rotating shaft 5, a volute 6, an annular balancing airway A1, an annular mixing gas channel A2, and an annular sealing gas channel A3. DETAILED DESCRIPTION

[0028] The following are specific embodiments of the invention and combined with the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments. Embodiment 1

[0029] like Figure 1 As shown, the carbon ring sealer for the chlorine compressor includes a sealer seat 1, the sealer seat 1 has a sealer mounting hole inside, an annular sealer 2 is fixed in the sealer mounting hole of the sealer seat 1, and both ends of the outer wall of the annular sealer 2 are sealed with the sealer mounting hole. For example, O-rings 22 are provided at both ends of the outer wall of the annular sealer 2, and the O-ring 22 and the sealer mounting hole are sealed. Secondly, a limiting convex ring 23 is provided at one end of the outer wall of the annular sealer 2 to abut against one end surface of the sealer seat 1. This structure enables the sealer seat 1 and the annular sealer 2 to be assembled in place in the X direction.

[0030] The inner wall of the annular sealer 2 is provided with a plurality of carbon rings 3 spaced apart along the axial direction of the annular sealer 2. The carbon rings 3 are in rotational contact with the rotating shaft 5 of the chlorine compressor. The axis lines of all the carbon rings 3 coincide with each other, so as to provide a very stable rotation connection performance for the rotating shaft 5.

[0031] In order to ensure the position stability of the carbon ring 3 and to further reduce the cost, a limit ring 4 formed by a plurality of annular limit blocks 40 abutting against each other is provided in the annular sealer 2. The annular limit blocks 40 are of a single annular structure. The annular limit blocks 40 abut against each other in the X direction to form a limit ring 4. When the rotating shaft 5 rotates, the limit ring 4 remains stationary (no movement in the axial and radial directions), but a clearance fit is formed between the end faces of two adjacent annular limit blocks 40 to provide a tiny airflow channel.

[0032] And the inner diameter of the carbon ring 3 is smaller than the inner diameter of the limiting movable ring 4 , so that the carbon ring 3 can be in rotational contact with the rotating shaft 5 .

[0033] like Figure 1As shown, in the radial direction of the annular sealer 2, an annular balancing air channel A1, an annular mixed gas channel A2 and an annular sealing air channel A3 are arranged in sequence and spaced along the X direction, a high-pressure gas recovery hole 10 connected to the annular balancing air channel A1 is arranged on the sealer seat 1, a mixed waste gas discharge hole connected to the annular mixed gas channel A2 is arranged on the sealer seat 1, and an injection gas pressure inlet hole connected to the annular sealing air channel A3 is arranged on the sealer seat 1. The first gap fitting seam between two adjacent annular limit blocks 40 among the plurality of annular limit blocks 40 is connected to the annular balancing air channel A1, the second gap fitting seam between two adjacent annular limit blocks 40 among the remaining annular limit blocks 40 is connected to the annular mixed gas channel A2, and finally the third gap fitting seam between two adjacent annular limit blocks 40 among the remaining annular limit blocks 40 is connected to the annular sealing air channel A3.

[0034] Part of the high-pressure gas entering the carbon ring sealer from the X direction enters the annular balance air channel A1 from the first gap fitting seam and is recycled, and the remaining high-pressure gas continues to flow in the X direction and injects an injection gas pressure equal to or greater than the high-pressure gas pressure into the annular sealing air channel A3, part of the injection gas pressure enters the carbon ring sealer from the third gap fitting seam and part of the injection gas pressure flows in the opposite direction to the X direction and merges with the remaining high-pressure gas in a convection state to form a mixed exhaust gas that enters the annular mixed gas channel A2 from the second gap fitting seam.

[0035] This embodiment sets a number of annular limit blocks 40 and their mutually matched gaps and joints, and combines them with the convection high-pressure airflow, so that part of the original high-pressure gas enters the annular balance airway A1, and the remaining part of the high-pressure airflow enters the annular mixed gas channel A2 after the injection air pressure convection injected into the annular sealing air channel A3. The above process can recycle part of the high-pressure airflow of the original high-pressure airflow, and the convection method can be used to remove the pressure of the remaining escaped high-pressure airflow to ensure the sealing performance of the sealer. The injection air pressure can be understood as atmospheric pressure.

[0036] like Figure 1 As shown, an annular positioning groove 20 is provided in the annular sealer 2. The annular positioning groove 20 can make the installation and fixation of the limiting movable ring 4 more firmly. At the same time, it can also further improve the sealing between the outer wall of the limiting movable ring 4 and the annular sealer 2. The annular balancing air channel A1, the annular mixing gas channel A2 and the annular sealing air channel A3 are respectively connected to the bottom of the annular positioning groove 20, and the limiting movable ring 4 is installed in the annular positioning groove 20.

[0037] Specifically, the facing annular end faces of two adjacent annular stop blocks 40 are matched and contacted with each other to form the above-mentioned first clearance fit seam, second clearance fit seam and third clearance fit seam, and the two annular stop blocks 40 at both ends of the X direction are clearance-fitted with the corresponding end shoulder 21 of the annular sealer 2 in the axial direction. The end shoulder 21 forms an axial limit for the limit ring 4 to prevent the limit ring 4 from falling off in the X direction. The end shoulder 21 is annular and has an inner diameter greater than the inner diameter of the carbon ring 3, one of the end shoulder 21 and the annular sealer 2 are connected as an integral structure, and the other end shoulder 21 and the annular sealer 2 are detachably connected, for example, by fasteners and the like.

[0038] Secondly, the inner walls of two adjacent annular limit blocks 40, and the two annular limit blocks 40 located in the X direction and the corresponding end shoulders 21 form a carbon ring fixing groove 41, at least part of the carbon ring 3 is in the carbon ring fixing groove 41 and the two are clearance fit in the X direction, at least one first clearance fit seam is directly connected to the carbon ring fixing groove 41 at the corresponding position, the first clearance fit seam is on one of the groove wall sides of the carbon ring fixing groove 41, at least one second clearance fit seam is directly connected to the carbon ring fixing groove 41 at the corresponding position, the second clearance fit seam is on one of the groove wall sides of the carbon ring fixing groove 41, at least one third clearance fit seam is directly connected to the carbon ring fixing groove 41 at the corresponding position, the third clearance fit seam is on one of the groove wall sides of the carbon ring fixing groove 41.

[0039] This embodiment has at least three groups of two adjacent annular limit blocks 40, and the outer wall of each group of two adjacent annular limit blocks 40 is formed with an inner groove body. In the X direction, the three inner groove bodies are defined as a first inner groove body 410, a second inner groove body 411 and a third inner groove body 412. The annular balance air channel A1 is connected to the groove of the first inner groove body 410, the annular mixing gas channel A2 is connected to the groove of the second inner groove body 411, and the annular sealing air channel A3 is connected to the groove of the third inner groove body 412.

[0040] The groove width of the first inner groove body 410 is equal to the width of the annular balance air channel A1 along the X direction. The groove width of the second inner groove body 411 is equal to the width of the annular mixed gas channel A2 along the X direction. The groove width of the third inner groove body 412 is equal to the width of the annular sealing gas channel A3 along the X direction.

[0041] By designing the slots to be of equal width, the corresponding airflow can enter or exit smoothly.

[0042] Secondly, the thickness of the annular limit block 40 in the X-direction of the present embodiment is greater than the width of the annular balance air channel A1, the thickness of the annular limit block 40 in the X-direction is greater than the width of the annular mixing gas channel A2, the thickness of the annular limit block 40 in the X-direction is greater than the width of the annular sealing gas channel A3, and a step is provided on the outer wall of one of the two adjacent annular limit blocks 40 in each group, and when the two adjacent annular limit blocks 40 abut against each other, the step and the end face of the other annular limit block 40 form an inner groove body.

[0043] The design of the annular stopper 40 can prevent the annular stopper 40 from entering the corresponding annular balancing airway A1 or annular mixed gas channel A2 or annular sealing air channel A3. The annular end faces of the three other annular stopper 40 are defined as the first annular end face 400, the second annular end face 401 and the third annular end face 402 in sequence. The first annular end face 400 is flush with a side wall of the annular balancing airway A1, the second annular end face 401 is flush with a side wall of the annular mixed gas channel A2, and the third annular end face 402 is flush with a side wall of the annular sealing air channel A3. The flush design allows the first / second / third clearance fit seams to be directly connected to the corresponding annular balancing airway A1, the annular mixed gas channel A2 and the annular sealing air channel A3.

[0044] At least one spiral eccentric groove body connecting the annular balancing gas channel A1 and the carbon ring fixing groove 41 is provided on the first annular end surface 400, and the groove depth of the spiral eccentric groove body gradually deepens from the annular balancing gas channel A1 side to the carbon ring fixing groove 41 side. The spiral eccentric groove body can recover high-pressure gas to the greatest extent, and at the same time, due to the change in groove depth, the recovered high-pressure gas can be pressurized so that the high-pressure gas can be discharged faster.

[0045] like Figure 1 As shown, an annular fixing spring 30 is provided on the outer circumferential surface of each carbon ring 3 and the bottom of the carbon ring fixing groove 41, and a limit spring 31 distributed along the X direction is provided between at least one of the two carbon ring end faces in the thickness direction of the carbon ring 3 and the groove wall of the carbon ring fixing groove 41, and the limit spring 31 is evenly distributed in the circumferential direction of the end face of the carbon ring 3.

[0046] The inner and outer diameters of the carbon ring 3 are locked by the fixed spring 30 to ensure that the carbon ring can be in close contact with the shaft. The limit springs 31 on both sides of the carbon ring 3 can keep the carbon ring vertical and prevent it from tipping over. The limit spring is used to increase the limit block, and some of the blocks are used to increase the ventilation channel for inflation and sealing. The labyrinth seal teeth on the shaft form a 3-chamber 4-section sealing structure. The amount of sealing gas used is effectively reduced. Due to the combination of the labyrinth seal teeth, the fixed spring force can reduce the gap between the increase and the shaft accordingly, so the service life of the carbon ring sealer can be extended accordingly.

[0047] The assembly method of the carbon ring sealer for the chlorine compressor comprises the following steps:

[0048] S1, the annular sealer 2 is fixed, and end stop shoulders 21 are arranged at both ends of the annular sealer 2, one end stop shoulder 21 and the annular sealer 2 are connected as an integral structure, the other end stop shoulder 21 and the annular sealer 2 are detachably connected and the other end stop shoulder 21 is separated from the annular sealer 2;

[0049] S2, using the end shoulder 21 connected to the annular sealer 2 as an assembly reference, alternately assemble the carbon ring 3 and the annular limit block 40 into the annular sealer 2, the corresponding annular end faces of two adjacent annular limit blocks 40 are mutually matched and a plurality of annular limit blocks 40 form a limit movable ring 4;

[0050] S3, fix the detachable end shoulder 21 in S1 to the annular sealer 2, and the end shoulder 21 is contacted with an annular limit block 40 assembled last; the inner walls of two adjacent annular limit blocks 40, and the two annular limit blocks 40 located in the X direction form a carbon ring fixing groove 41 with the corresponding end shoulder 21, each carbon ring fixing groove 41 is configured with a carbon ring 3, and at least a part of the carbon ring 3 is installed in the carbon ring fixing groove 41.

[0051] The above assembly method can make the first gap fitting seam between two adjacent annular limit blocks 40 connected to the annular balance air channel A1, the second gap fitting seam between two adjacent annular limit blocks 40 connected to the annular mixing gas channel A2, and the third gap fitting seam between two adjacent annular limit blocks 40 connected to the annular sealing air channel A3.

[0052] Furthermore, in step S2, it also includes assembling the fixing spring 30 and the limiting spring 31. First, the limiting spring 31 is assembled, and then the fixing spring 30 is assembled. The fixing spring 30 is in tangential contact with the bottom of the carbon ring fixing groove 41. Embodiment 2

[0053] like Figure 2 As shown, the working principle and structure of this embodiment are basically the same as those of the first embodiment, and the different structure lies in that: a plurality of first spring positioning holes 32 distributed in a circumference are provided on at least one carbon ring end face in the thickness direction of the carbon ring 3, and second spring positioning holes 413 corresponding to the first spring positioning holes 32 are provided on the groove wall of the carbon ring fixing groove 41, and the second spring positioning holes 413 are provided on the matching end face of the annular limit block 40, at least part of the limit spring 31 extends into the first spring positioning hole 32, and the remaining part of the limit spring 31 extends into the second spring positioning hole 413.

[0054] A first spherical concave surface is provided at the bottom of the first spring positioning hole 32, and a first hemispherical body 33 is provided at the bottom of the first spring positioning hole 32, the spherical convex surface of the first hemispherical body 33 matches the first spherical concave surface, and one end of the limit spring 31 abuts against the plane of the first hemispherical body 33. The design of the first hemispherical body 33 and the first spherical concave surface can correct the axis of the limit spring 31 so that the axis of the limit spring 31 is parallel to the axis of the carbon ring 3. Embodiment 3

[0055] like Figure 1 As shown, the working principle and structure of this embodiment are basically the same as those of the first embodiment, and the different structures are: the fixed spring 30 is tangent to the matching position of the annular stop block 40 and the end stop shoulder 21, and the fixed spring 30 is tangent to the matching position of two adjacent annular stop blocks 40. The advantage of the elastic force provided by the radial direction of the transverse cross section of the fixed spring 30 is that the matching clearance between the annular stop block 40 and the end stop shoulder 21 is equal to the matching clearance between the two adjacent annular stop blocks 40, and finally the carbon rings 3 are evenly spaced and the force is balanced, thereby extending the service life of the carbon rings 3. Embodiment 4

[0056] The working principle and structure of this embodiment are basically the same as those of the first embodiment, and the different structure lies in that the annular end faces of two adjacent annular limit blocks 40 are clearance-matched, and a plurality of spherical protrusions (not shown in the figure) are provided in the circumferential direction of one of the annular end faces, and a spherical depression matching the spherical protrusions one by one is provided on the other annular end face.

[0057] By adopting the above design, the axis center lines of the plurality of annular limiting blocks 40 can always coincide with each other. Embodiment 5

[0058] like Figure 3 As shown, this embodiment provides a chlorine compressor, including a volute 6 and a rotating shaft 5 at least partially inserted into the volute 6, and the rotating shaft 5 and the volute 6 are sealed by the carbon ring sealer for the chlorine compressor of the first embodiment.

[0059] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A carbon ring sealer for a chlorine gas compressor, comprising a sealer seat (1), an annular sealer (2) being fixed in the sealer seat (1), a plurality of carbon rings (3) being arranged on the inner wall of the annular sealer (2) and spaced apart along the axial direction of the annular sealer (2), characterized in that: A limit ring (4) formed by a plurality of annular limit blocks (40) abutting against each other is provided in the annular sealer (2); the inner diameter of the carbon ring (3) is smaller than the inner diameter of the limit ring (4); an annular balancing air channel (A1), an annular mixed gas channel (A2) and an annular sealing air channel (A3) are provided in the radial direction of the annular sealer (2) and are spaced in sequence along the X direction; a first clearance fit seam between two adjacent annular limit blocks (40) among the plurality of annular limit blocks (40) is communicated with the annular balancing air channel (A1); a second clearance fit seam between two adjacent annular limit blocks (40) among the remaining annular limit blocks (40) is communicated with the annular mixed gas channel (A2); and finally a third clearance fit seam between two adjacent annular limit blocks (40) among the remaining annular limit blocks (40) is communicated with the annular sealing air channel (A3); The facing annular end surfaces of two adjacent annular stop blocks (40) are in contact with each other to form the above-mentioned first clearance fit seam, second clearance fit seam and third clearance fit seam, and the two annular stop blocks (40) at the two ends in the X direction are clearance-fitted with the corresponding axial end shoulders (21) of the annular sealer (2); The inner walls of two adjacent annular limit blocks (40), and the two annular limit blocks (40) located in the X direction and the corresponding end stop shoulders (21) form a carbon ring fixing groove (41), at least one of the first clearance fitting seams is directly connected to the carbon ring fixing groove (41) at the corresponding position, at least one of the second clearance fitting seams is directly connected to the carbon ring fixing groove (41) at the corresponding position, and at least one of the third clearance fitting seams is directly connected to the carbon ring fixing groove (41) at the corresponding position; An annular fixing spring (30) is provided on the outer circumferential surface of each carbon ring (3) and the bottom of the carbon ring fixing groove (41); the fixing spring (30) and the bottom of the carbon ring fixing groove (41) are in tangential contact; a limit spring (31) distributed along the X direction is provided between at least one of the two carbon ring end faces in the thickness direction of the carbon ring (3) and the groove wall of the carbon ring fixing groove (41); the limit springs (31) are evenly distributed in the circumferential direction of the carbon ring end face of the carbon ring (3).

2. The carbon ring sealer for a chlorine gas compressor according to claim 1, characterized in that: An annular positioning groove (20) is provided in the annular sealer (2); the annular balancing air channel (A1), the annular mixed air channel (A2) and the annular sealing air channel (A3) are respectively connected to the bottom of the annular positioning groove (20); and the limit ring (4) is installed in the annular positioning groove (20).

3. The carbon ring sealer for a chlorine gas compressor according to claim 1, characterized in that: There are at least three groups of two adjacent annular limit blocks (40), and the outer wall of each group of two adjacent annular limit blocks (40) is formed with an inner groove body; in the X direction, the three inner groove bodies are defined as a first inner groove body (410), a second inner groove body (411) and a third inner groove body (412), the annular balance air channel (A1) is connected to the groove of the first inner groove body (410), the annular mixed gas channel (A2) is connected to the groove of the second inner groove body (411), and the annular sealing gas channel (A3) is connected to the groove of the third inner groove body (412).

4. The carbon ring sealer for a chlorine gas compressor according to claim 3, characterized in that: The thickness of the annular limit block (40) in the X direction is greater than the width of the annular balance air channel (A1) or the width of the annular mixed air channel (A2) or the width of the annular sealing air channel (A3); a step is provided on the outer wall of one of the annular limit blocks (40) in each group of two adjacent annular limit blocks (40); when the two adjacent annular limit blocks (40) abut against each other, the step and the end face of the other annular limit block (40) form the inner groove body.

5. The carbon ring sealer for a chlorine gas compressor according to claim 4, characterized in that: The annular end faces of the three other annular limit blocks (40) are defined as a first annular end face (400), a second annular end face (401) and a third annular end face (402) in sequence, wherein the first annular end face (400) is flush with a side wall of the annular balancing air channel (A1), the second annular end face (401) is flush with a side wall of the annular mixed gas channel (A2), and the third annular end face (402) is flush with a side wall of the annular sealing air channel (A3).

6. The carbon ring sealer for a chlorine gas compressor according to claim 1, characterized in that: The sealer seat (1) is provided with a high-pressure gas recovery hole (10) connected to the annular balancing gas channel (A1), a mixed waste gas discharge hole connected to the annular mixed gas channel (A2), and an injection gas pressure inlet hole connected to the annular sealing gas channel (A3).

7. The method for assembling a carbon ring sealer for a chlorine compressor according to any one of claims 1 to 6, characterized in that: The assembly method comprises the following steps: S1. The annular sealer (2) is fixed, and end stop shoulders (21) are arranged at both ends of the annular sealer (2), wherein one of the end stop shoulders (21) and the annular sealer (2) are connected to form an integral structure, and the other end stop shoulder (21) and the annular sealer (2) are detachably connected and the other end stop shoulder (21) is detached from the annular sealer (2); S2, using the end stop shoulder (21) integrally connected to the annular sealer (2) as an assembly reference, alternately assembling carbon rings (3) and annular limit blocks (40) into the annular sealer (2), wherein the corresponding annular end faces of two adjacent annular limit blocks (40) coincide with each other and a plurality of the annular limit blocks (40) form a limit movable ring (4); S3, the detachable end stop shoulder (21) in S1 is fixed to the annular sealer (2), and the end stop shoulder (21) is abutted against the annular limit block (40) assembled last; the inner walls of two adjacent annular limit blocks (40), and the two annular limit blocks (40) located in the X direction and the corresponding end stop shoulder (21) form a carbon ring fixing groove (41), each of the carbon ring fixing grooves (41) is provided with a carbon ring (3), and at least a portion of the carbon ring (3) is installed in the carbon ring fixing groove (41).

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